106 INSECTA. 



antennre are pectinated or strongly serrated in the males, and com- 

 posed of more than eleven joints in several of these individuals ; and 

 where the elytra are as long as the abdomen, and cover it superiorly, 

 as well as the wings, would form a second general division. 



P. coriarius ; Ceramhyx coriarius, L. ; Oliv., lb. 1, 1. Length, 

 fifteen lines; blackish-brown; the antennae serrated and com- 

 posed of twelve joints in the male; three teeth on each lateral 

 margin of the thorax. The larva lives in the decayed trunks of 

 Oak and Birch trees. When about to undergo its metamor- 

 phosis it enters the earth *. 

 It appears to me that other Prionii, peculiar to Brazil, of an analo- 

 gous form, but with small triangular elytra Avhich do not entirely 

 cover the abdomen~Fam. Nat. du Regne Anim. — should form a 

 distinct genus — Anacolus. Messrs. Lepeletier and Serville have de- 

 scribed two species — sanguineus, lugubris — in the Encyclopedic Me- 

 thodique. 



Finally, others Avlth various and metallic colours in several have a 

 shorter, wider, and almost oval body; the head is frequently prolonged 

 posteriorly behind the eyes; the antennae are simple and compressed; 

 the mandibles short ; the thorax is Avide, dilated, arcnated, and un- 

 identated laterally, and obliquely truncated or emarginated at the 

 posterior angles ; the abdomen is nearly square, about one-half longer 

 than it is Avide. The scutellum is usually large. The ligula is pro- 

 portionally more elongated f . 



2. The Cerambycini have a very apparent labrum extending across 

 the whole width of the anterior extremity of the head ; their two 

 maxillary lobes are very distinct and salient ; their mandibles of an 

 ordinary size, and similar or but little different in both sexes ; their 

 eyes alwa^^s emarginated and surrounding, at least partially, the base 

 of the antennae, which are usually as long as the body, or longer ; the 

 thighs, or the four anterior ones at least, are commonly in the form 

 of an ovoid or OA'^al club, narrowed into a pedicle at base, 



In the first place we have those in which the last joint of the palpi 

 is always manifestly thicker than the preceding ones, and in the form 

 of a reversed triangle, or obconical ; where the head is not sensibly 

 narrowed and prolonged anteriorly in the manner of a snout ; where 

 the thorax is not widened from before posteriorly, and does not pre- 

 sent the figure of a trapezium or truncated cone ; and where the ely- 

 tra are neither very short and squamiform, nor abruptly narrowed a 

 little beyond their base, and subulate at the extremity. The species 



* The P. brevicornis, imbricornis, depsarius, &c. 



f The P. nifidiis, Jineafns, ThomtP, bifasciafus, canaUcidaius, &'c., Fab. 



The P. Spcncii, Kirby, Lin. Trans. XII, xxii, 13, appears to belong to the same 

 division, or to form a separate one. See Lat., Genev. Crust, et Insect. I, ii, p. 30, 

 et seq. ; and Encyc. Method., article Prione, 



