190 IN8ECTA. 



quently have the head broader, the mandibles stronger and more sa- 

 lient, and the anterior legs longer. 



Clythra, Leach, Fab. — Melolontha, Geoff. 



C. qiiadripunctata ; Chrysomela quadripunctala, L., Oliv., 

 Col. VI, 96, i, ]. From four to five lines in length; black ; ely- 

 tra red, each marked with two black dots, tlie anterior of which 

 is the largest. 



The larva inhabits a coriaceous tube that it drags about with 

 it, and which with the animal was sent to me by M. Waudoner, 

 from Nantes *. 



There, the elytra, strongly dilated exteriorly at their origin, and 

 then suddenly narrowed, present a deep emirgination. The pos- 

 terior angles of the thorax are acute, arched and form a roof; the an- 

 terior are strongly curved underneath. The antennae are laid along 

 its inferior sides, or are lodged under its edges. The eyes are evi- 

 dently emarginated in several. The superior surface of the body in 

 those, and they are the greatest number, where it is less short and 

 convex, is usually very uneven. 



These Chrysomelinae are exclusively proper to the western conti- 

 nent. 



Chlamys, Knock. 



Where the form of the body approaches that of a short cylinder or 

 of a cube, with the thorax abruptly elevated, and as if hump-backed 

 in the middle, and the middle of its posterior margin prolonged or 

 unilobate. The body is in general extremely scabrous. In some the 

 labial palpi are forked f . 



Lamprosoma, Kirb. 



Where the body is almost globular, extremely convex, very smooth, 

 and the thorax very short, very broad, gradually raised and slightly 

 lobate at the middle of its posterior margin. The five last and ser- 

 rated joints of the antennae are less dilated than in the preceding 

 ones %. 



Sometimes the antennae, evidently longer than the head and thorax 

 united, are simple and filiform, or thickest at the end, or even termi- 

 nated in a club, in which case they are serrated, but only from the 

 seventh joint. The body, in several, is ovoid and narrowed before. 

 The last joint of the antennae is appendiculated, so that their number 

 seems to amount to twelve. 



* See Olivier and Fabriciiis, tut abstract from the genus of the latter those species 

 •which belong to the following one. 



f See Olivier, but more especially the excellent Monograph of M. Kollar, and that 

 of Kliig. Se also Knoch, New. Beytr. Insect., p. 122, and Lat., Gener. Crust, et 

 Insect., Ill, p. 53. 



X Lamprosoma bicolor, Kirb., Lin. Trans., XII, xxii, 15. See especially the In- 

 sect. Spec. Nov. Germ., p. 574, 575. 



