COLEOrTERA. 459 



wider in its middle than the abdomen. Each elytron has three 

 longitudinal elevated lines, each of which, on each side, is ac- 

 companied by a range of little tubercles, arranged alternately 

 and frequently uniting with them; between the exterior margin 

 and the first line, and between the last and the suture, there is 

 also a series of similar tubercles. The anterior tibiae are wider 

 and triangular. Very common in all Europe in sandy locali- 

 ties, and appearing with the first fine weather in spring(l). 



2. Those in which the body is narrow and elongated, almost of 

 the same width posteriorly or wider; where the thorax is nearly 

 square, and at least almost as long as it is broad, and where the an- 

 tennae form a thick club, or are abruptly dilated at the extremity. 



In some, the antennae are thick, cylindrical or fusiform, perfoliate, 

 pilose, and apparently composed of but ten joints, the eleventh or 

 last being very short and but little distinct; the second is as large as 

 the following one. 



Corticus, Dej. Sarrotrium, Germ. 



Where the antennae are cylindrical and terminated by a larger 

 joint, forming a little club(2). 



Orthocerus, Lat. Sarrotrium, Illig. 



Where the antennae, wider in the middle, form a densely pilose 

 club, with most of the joints transversal, and the last much narrower 

 than the preceding ones(3). 



The antennae of the others are of an ordinary size, simply granose, 

 neither perfoliate nor pilose, and consist of eleven distinct joints. 



Chiroscelis, Lam. 



Two stout teeth on the outer side of the two first tibiae; antennae 

 terminating in a small and nearly globular, transverse club, formed 

 by the two last joints(4). 



Toxicum, Lat. 

 The tibiae simple; club of the antennae compressed and formed by 



(1) The Opatr., 7, 8, 10, Oliv., lb. See Encyc. Method., article Opatrum, and 

 the Catalogue, &c. , of Dejean. The genus Phylan, Meg 1 , and Dej., presents no 

 character which clearly distinguishes it from that of Opatrum. 



(2) Sarrotrium celtis, Germ., Insect. Spec Nov., p. 146. 



(3) Hispa mutica, L-; Panz., Faun. Insect. Germ., I, 8. 



(4) Chiroscelis bi 'fenestra, Lam, Ann. du Mns d'Hist. Nat., No. 16, XXII, 2; 

 Tenebrio digit alus, Fab. 



