CEUTORHYNCHINI. 269 



addition, the pectoral groove prolonged to the posterior margin of the 

 metasternum. The funicle of the antennae is slender, and consists of 

 seven joints, of which the second is as long as the three following. The 

 claws are armed with an acute tooth, half as long as the claw. 



1. C. insequalis. Ceutorhynchus inceq. Say, Cure. 20; ed. Lee. i, 286. 



Middle, Southern and Western States, Easily known by the broad 

 form and dark color; the prothorax has four large tubercles, of which the 

 outer ones are acute; the dorsal canal is prolonged to the apical margin, 

 which is slightly emarginated thereby. The alternate interspaces of the 

 elytra are more elevated and somewhat uneven, as in certain Conotracheli. 

 Length 2.7 mm.; .11 inch. 



CNEMOGONUS n. g. 



The tibiae of one species are so different from those of the other Cceliodes, 

 that I am obliged to regard it as a separate genus. They are, namely, 

 much flattened and dilated externally, so as to form a large angle near the 

 knee. The outer apical angle of the front tibise is prolonged in a toothed 

 process, as in Cceliodes, and the other tibiae are obliquely truncate and 

 fringed externally. In other respects this genus agrees with Ccsliodes; the 

 pectoral groove is not prolonged into the metasternum, as in Craponius, nor 

 are the tibia? grooved externally for the reception of the tarsi. The thighs 

 are not toothed, and the claws are armed with a short tooth, not cleft, as in 

 Ccfliodes. 



C. epilobii. Cure. epilobiiP&yk., Faun. Suec. iii, 259; RhyncJicenus ep. 

 Gyll., &c. ; Cceliodes ep. Gyll., Sch. Cure, iv, 288, &c. 



Widely diffused in Europe, from Scandinavia to Austria. I have a spec- 

 imen from Great Slave Lake, and one from British Columbia, which seem 

 to be the same. Apart from the generic characters above given, this spe- 

 cies is easily known by the interspaces of the elytra, rough with small 

 acute tubercles ; near the base there is a small cruciform white spot, 

 formed by the junction of a short sutural line with a transverse one, which 

 extends to the third stria. Length 3.2 mm. ; .125 inch. 



CCELIODES Sch. 



In this genus the tibiae are slender, not flattened nor toothed on the outer 

 margin, but the front pair, in some species, are prolonged at the outer 

 apical angle into a short process, which is toothed on the lower edge. The 

 pectoral groove extends as far as, but not upon, the metasternum. The 

 claws are nearly cleft, the inner parts being almost contiguous, as in most 

 species of Anthonomus. 



A. Front tibiae prolonged outwards at tip: thighs unarmed. 



Interspaces of elytra convex 1. curtus. 



Interspaces of elytra flat 2. acephalus. 



B. Front tibiae not prolonged at tip: thighs unarmed. 

 Elytra with rows of acute tubercles 



