468 Coleopterolofjical Notices, VL 



griseus was certainly not a preoccupied name in Byturosomns or 

 Pristoscelis, altliough LeConte himself seems to have agreed to 

 the change even in the second edition of the " Classification." In 

 his revision of the Dasvtini (Proc. Acad., Phila,, ISGfi, p. 351) Le- 

 Conte assumes that Motschulsky did not know his griseus, but 

 had mistaken /».sci<s for it; but this idea seems to have been sub- 

 sequently abandoned, for (Class. 2 ed., p. 215) B^turosomus is 

 said to have been founded upon "Z). rufij)es Motsch. (griseus \\ 

 Lee.)." Finally (1. c, p. 353) LeConte states that gi'iseus Lee. 

 and antennatus Motsch., are identical, and places the former as the 

 S3'nonym, although it antedates antennatus by some seven years. 

 It is not possible that more than a fraction of the species can 

 be defined in the following table, and it is only hoped that the 

 short characterizations ma}- prove of some avail as an index to 

 the descriptions. The species are rather monotonous, though ap- 

 parently not especially variable within the limits of the respective 

 sexes except in size; the sexual differences in outline are how- 

 ever sometimes pronounced, as before remarked : — 



Body clothed with subdecuiubent haiis; without trace of intermixed erect 

 setse; marginal cilia of the prothorax generally short and pale in color... 2 

 Body clothed with dense subdecumbent and cinereous ]nabescence, which is 

 intermixed, at least toward the sides of the elytra, witli short sparse and 

 erect cinereous seta; which frequently seem to be subserial in arrange- 

 ment; fringe at the sides of the prothorax irsually short, even and close- 

 set 16 



Body clothed with short cinereous or blackish subdecumbent pubescence, in- 

 termixed abundantly with long hispid hairs, black or cinereous in color, 

 the hairs at the sides of the prothorax long, erect and bristling, and not 



forming a regular or close-set fringe 22 



Body clothed with moderately long sul)erect blackish i)ul)escence, the margi- 

 nal fringe of the prothorax composed of rather short even and stiff black 



hairs 36 



58 — Elytral pubescence uniform in structure and distribution 3 



Elytral pubescence uneven in structure and distrilmtion 15 



3 — Elytra uniform in coloration, l)lack or slightly piceous 4 



Elytra pale or bicolored 13 



4 — Apiciil angles of the prothorax more or less anteriorly prominent. 

 Biisal angles of the i)rothorax prominent. 



Apical angles broadly rounded 1. COilipactiis 



Apical angles not rounded '2. lirevis 



Basal angles In-oadly obtuse and rounded, the ai)ical narro\vly roundml and 

 only slightly blunt. 

 Elytral pubescence coarse, dense and cinereous :5. oi'egoiieiisis 



