

In working out these fossil Coleoptera I have been greatly indebted to 

 my friends, Dr. George II. Horn, the late Dr. .lohn L. LeConte, and espe- 

 cially Mr. Samuel Ilenshaw, and have had free access to the collections of 

 .Mr. Hensha\v, as well as to those of Mr. K. I*. Austin while in Mr. Ilen- 

 shtiw's keeping', and of the late Mr. George D. Smith, for all of which I 

 wish to express my grateful thanks. 



For the remainder of this volume no general comparisons are presented 

 nnd3r the different groups, as, with rare exceptions, none ot the Florissant 

 species are described, and until they are, the American fauna can not b<- 

 fairly discussed. 



Family ANTHRIBID>E Waterhouse. 

 CHORAGUS Kirby. 



ClIORAGUS F1CTILIS. 

 I'l. S, Fitf. !. 



A single specimen, not very distinctly preserved, represents this species. 

 It shows a partially dorsal and partially lateral aspect. The head is well 

 rounded, the mouth parts triangularly produced, to a greater extent and more 

 pointed than shown in the plate. The antenna? are apparently inserted upon 

 the upper surface oi*the beak, and are more or less clubbed, which circum- 

 stances have made it seem probable that the insect belonged here. The 

 antenna-, however, appear to become thickened into a club throughout all the 

 distal half, and are thus different from Choragus; they can be seen to be 

 jointed, but with such indistinctness that the number of joints involved in 

 the club is uncertain. The thorax is quadrate and apparently half as long as 

 broad, while the exceedingly obscure elytra are seen to be feeblv striate: the 



Vol. XIII - 30 4i- s -, 



