front of which arises a narrow transverse immovable plate, with the sides rounded (which, from the analogies existing between the structure of this insect, Lucànus, Melolontha, Geotrupes, Cárabus, &c., I consider as the stirpes of the mentum, and which, in Lucànus, is much more developed, and broader in front). The true chin, or mentum, I consider to be represented by the semicircular plate, notched in front, which here, nevertheless, performs the true office of a lower lip, by closing the mouth. In addition to the three-jointed palpi, and their broad internal scapes, there only remain to be discovered the true lower lip (labium) and tongue (lingua). Now, in the English stag beetle, as in this insect, the bases of the scapes of the palpi are united by a fleshy tubercle, which, in the former insect, is adapted to a small notch or incision at the base of the mentum within; we can, however, scarcely consider this tubercle as the lower lip: whilst the only other part of the instrumenta labialia remaining unnoticed, are the two long and delicate central plates, employed, in conjunction with the maxillary plates, in lapping up sap, as above stated, which must consequently be considered as representing of themselves both the lower lip and tongue; and, from the analogies above pointed out, I cannot but consider that we are warranted in regarding the outer surface of these plates as representing the labium, and their inner surface the tongue. Hence, we shall be enabled to consider the palpi as truly belonging to the lower lip; or, perhaps, rather as arising between the chin and lower lip; which I apprehend to be the typical structure of the Coleoptera. The membranaceous plates of the lower lip are of a much more delicate structure in this insect than in Lucànus, as well as much more elongated, so as admirably to perform the office of a tongue: it also appears to me that, when alive, they are flat, and not curled at the sides, as they now appear in their dried state.*

Respecting the affinities of this insect, which is evidently of the male sex, the nearest approach to it is evidently made by the South American genus Pholidòtus. Indeed, in the structure of the lower jaws and instrumenta labialia of the two genera (if we except the coat of down with which the mentum in that genus is clothed) there is very little difference. The latter genus is evidently allied to Lamprìma, and these three genera

Any one who will take the trouble to cut off the large plate which closes the under side of the mouth of a stag beetle will be able to verify some of the preceding details, and will thereby be enabled much more readily to understand the subject.

(with the exception of Platýcerus) are exclusively adorned with metallic colours.

"The three apical joints of the club of the antennæ in the male Pholidòtus are alone enlarged; the mandibles are clothed with down on their inner surface; and the mesosternum is slightly produced in front, as in Lamprìma. In varying, therefore, from Pholidòtus in these particulars, we find a near approach made to Lucànus, which is the only other genus of Lucánidæ that contains species which may vie, in general appearance, size, and strength of mandibles, with the present. Hence, we may consider Chiasognàthus Grántii as forming an interesting link between these two genera.

"The female, when discovered, will doubtless be found to possess short jaws, and the club of the antennæ not so much developed."

The Grove, Hammersmith, March 7. 1832.

In addition to the above valuable exhibition and description of insects remarkable for their forms, six very extraordinary instances, in as many species of the genus Centròtus, will be found in Vol. II. p. 20-22., in a communication from the Rev. W. Kirby.-J.D.

ART. VI. Additions to the List of British Insects. By CHARLES C. BABINGTON, B.A. F.L.S. &c., St. John's College, Cambridge.

Sir,

THE following insects, discovered to be British by myself or my friends, being excluded from the excellent works of Messrs. Stephens and Curtis by their respective plans, I have thought it would be advantageous to entomological students if they were published in this Magazine; and I cannot help expressing my hope that others will follow my example. The descriptions are taken from my own specimens. I am, Sir, yours, &c.

CHARLES C. BABINGTON.

1. DRO'MIUS LO'NGICEPS? Dej. Coleop. ii. 450.? D. MONOSTIGMA mihi MSS.

Elongato-linearis, pallidè fusco-ferrugineus, thorace subquadrato, elytris striatis, obsoletissimè punctatis, suturâ et maculâ communi subapicali cuneatâ nigris, antennis pedibusque pallidis. (Longitudo corporis 3 lineæ.)

Much elongated, nearly linear, pale ferruginous; head darker, with a trans

I have lately seen, in the rich cabinet of the Rev. F. W. Hope, a metallic-coloured Lucanus, which more satisfactorily confirms the affinity subsequently stated above.

verse elevated line between the antennæ, and two oblique longitudinal punctate fovea between the eyes; thorax quadrate, narrowed posteriorly, with all the angles rounded, lateral and posterior margins elevated, transversely wrinkled, with an abbreviated dorsal channel; elytra striated, striæ obsoletely punctate, suture dark, the colour widening toward the apex into a posteriorly rounded dark spot; under side pale ferruginous, abdomen darker; legs and antennæ pale.

Probably D. lóngiceps of Dejean, but certainly distinct from D. linearis; differing in the space between the eyes not being longitudinally wrinkled, as in that insect, the more quadrate thorax, and the wedge-shaped posteriorly rounded sutural spot on the elytra; the form, also, is much more elongate and linear.

Taken in Madingley Wood, Cambridgeshire, from moss, in the spring of 1831; and in the boats which bring the sedge, from the fens, to Cambridge, in March, 1832.

2. D. QUADRISIGNATUS Dej. Coleop. i. 236.

Pallidus, capite nigro, thorace quadrato, rufo, elytris basi, suturâ, angulis humeralibus, fasciâque posticâ fuscis, subtus piceus. (Long. corporis 2 lin.) The same form as D. 4-maculàtus, but much smaller. Head black; thorax quadrate, rufo-ferruginous, with the margins paler; elytra pale yellow, with, a little behind the middle, a broad transverse brown fascia, dilated posteriorly on the outer margin, and connected by the suture with a triangular spot of the same colour at the base, the exterior angles of which are a little produced, so as to form an elongated patch on each side of the elytra; apex of the suture pale; abdomen piceous beneath, with the thorax paler; legs and antennæ pale.

Differs from D. sígma, under which name it has stood in my collection, by having the triangular spot, &c., at the base of the less faintly striate elytra, the fascia not dentate anteriorly, and the under side piceous. Taken in Madingley Wood, in March, 1831.

3. HYDRO PORUS JUGULA'RIS mihi. Oblongo-ovatus, niger, glaber, jugulo †, antennis pedibusque ferrugineis. (Long. corp. [?] lin.) Oblong-ovate, black, glabrous; head with the hinder margin of the vertex and the throat ferruginous; thorax with the lateral margins very obscurely ferruginous; elytra black, thickly but finely punctate through

*It is worth stating, that the sedge so extensively used in Cambridgeshire for thatching, heating ovens, and lighting fires, is mainly composed of the herbage of Cladium Mariscus Eng. Bot., t. 950.; that of Carex ripària, paludòsa, and, doubtless, other species, being blended with it in small proportions. Smith's English Flora (vol.i. p. 36.) represents Clàdium Mariscus as " not common:" it is, notwithstanding, no rarity in the fens of Cambridgeshire. The dried herbage, doubled into cylindrical wisps of 6 in. or 8 in. long, and 3 in. in diameter, is generally used in the town of Cambridge for lighting fires, in the manner the bundles of split fir-wood are used in London. — J. D.

Jugulum, the throat; " that part of the surface which lies between the temples." (Kirby and Spence's Int. to Entom., iii. 366.)

out; body beneath shining black, punctate; legs ferruginous; antennae the same, with the apex of the terminal joints fuscous.

Var. ẞ, with the upper surface less thickly but deeply punctate, and very shining.

Distinguished by its oblong form, glabrous body; and having the throat, legs, and antenna ferruginous.

Taken by my friend T. C. Thompson, Esq., "in a pond at Kirby Hall, near Boroughbridge, Yorkshire, towards the end of August, 1831."

4. COLYMBETES BRANCHIA'TUS mihi.

Oblongo-ovatus, convexus, niger, subtilissimè punctato-strigosus, antennis ferrugineis, pedibus fuscis, elytrisque lineolâ obsoletâ fenestratá. (Long. corp. 3 lin.)

Small, oblong-ovate, convex, black, very finely punctate-strigose; head black, with two obsolete testaceous spots on the crown; antennæ ferruginous; thorax as in C. affinis; elytra oblong-ovate, nearly linear, convex, with, a little behind the middle, a very obsolete pale line near the outer margin; each elytron has on its disk three irregular rows of punctures becoming scattered towards the apex, where near the suture is an irregular stria of impressions; body black beneath, irregularly strigose; two anterior legs dusky ferruginous, four posterior pitchy black.

Differs from C. affinis in having the four posterior legs. pitchy black, apparently only one very obsolete fenestrated spot on each of the elytra, the anterior margin of the head black, and the shape much more linear.

Taken in "North Wales," by my friend C. Darwin, Esq., in the summer of 1830.

5. ELMIS RUGO'SUS mihi. Lineari-elongatus, niger, antennis pedibusque rufis, thorace bilineato, elytris punctato-striatis, interstitiis rugosis, striâque elevatâ unicâ. (Long. .corp. a lin.)

Linear-elongate, depressed, black; thorax quadrate, with a curved line on each side scarcely approximating in front, the intermediate space slightly, and the exterior margins thickly, punctate; the anterior margin slightly rufous; elytra elongate, depressed, punctate-striated, the striæ vanishing towards the apex; the third from the margin elevated, and the interstices rugose; antennæ and legs rufescent.

Near to E. parallelipipedus, but may be known from that species by the rugose interstices of the elytra, the absence of the central impressed dot on the thorax, and in having the striæ not continued to the apex of the elytra, as in that insect. Taken at Bath, in August, 1831.

6. MALA CHIUS BIPUNCTA'TUS mihi. Nigro-virescens, thorace toto elytrorumque apice pallidè rufis, in ipso apice punctis duobus impressis nigris, tibiis tarsisque pallidis. (Long. corp. 1 lin.)

Blackish green, glabrous; mouth pale; thorax entirely pale rufous; elytra blackish green, with the extremity pale rufous, and an impressed slightly lunate black spot very near the apex of each; abdomen blackish; tibia and tarsi rufous, with the last joint of the latter black; antennæ with

the three basal joints red, the first being dark above, the fourth and to the end dark.

This insect is most nearly allied to M. ruficollis, from which it differs in the small extent of the red part of the elytra in this not occupying more than a fourth of the elytra ; but in that, above half. M. ruficóllis, also, has not the two black spots at the apex; and the antennæ have one additional red joint, viz. the fourth: the form also is different.

One specimen taken at Monkswood, near Sawtry, Hunts, and two in the fens of Cambridgeshire, in May, 1831.

WE beg to express our admiration of our obliging correspondent's act of translating his own descriptions. This is respectfully desired of all correspondents who may wish to describe in Latin; for as, conformably with the object of this Magazine, which is to familiarise and popularise natural science, the Latin descriptions must be translated, no one is so likely, from some degree of amphibology which attaches to Latin, to apprehend precisely the describer's meaning as the describer himself.-J.D.

ART. VII. List of Papilionida occurring in the Vicinity of Dover. By the Rev. W. T. BREE, M.A.

Sir,

THE following list of Papilionidæ found in the vicinity of Dover may not, perhaps, prove unacceptable to some of your entomological readers; to such, at least, as may in future visit this now fashionable watering-place. As my residence here did not commence till the second week in August, of course the season for many of our papilios was gone by. Some species, therefore, which, owing either to the late period of the year, or to their own intrinsic rarity, I had not myself an opportunity of observing alive and at large, I have inserted on the authority of Mr. Le Plastrier, of Snargate Street, Dover, who has long paid attention to the insects of this district; and to such articles I have affixed the letter L. The list, too, may not prove quite without interest, as well by showing what is to be found in this neighbourhood, as likewise what is not, or at least not commonly and in this re

*Mr. Le Plastrier collects insects for sale, and is, I believe, well known to many eminent entomologists. All collectors who visit Dover I would strongly recommend to apply to Mr. Le Plastrier, whom, I will venture to say, they will find ready, in the most obliging manner, to communicate any information he may possess respecting the localities, habits, and periods of the insects to be met with in the neighbourhood. Mr. Curtis has named the Dover Tortrix moth, Carpocápsia Leplastriana, after this assiduous collector.