174 



FAMILY IT. CAKABIDJE. 



h. Outer apical angle of front tibiae prolonged; form robust; length 

 14 mm. LXII. Nothopus. 



bb. Outer apical angle of tibiae not prolonged; form less robust; length 

 less than 11 mm. 



c. Mentum toothed ; hind angles of thorax sharply rectangular ; 



length 8-10 mm. LXIII. Cratacanthus. 



cc. Mentum not toothed ; length less than 8.5 mm. 



d. First joint of hind tarsi slightly longer than second; outer edge 

 of middle tibiae rather flat and with a double row of spinules 

 closely placed ; elytra with one dorsal puncture. 



LXIV. Agonodebus. 



dd. First joint of hind tarsi nearly as long as the next three; middle 

 tibiae with the spinules sparsely placed, in the male curved 

 and serrate on the inner side ; three rows of dorsal punctures. 



LXV. Discodeeus. 



LXI. Geopinus Lee 1848. (Gr., 1 1 earth + dirt. ") 



Represented in the United States by one medium-sized robust 

 species which burrows deeply in damp, sandy localities. The sur- 

 face is smooth and glabrous, thus favoring its subterranean life. It 

 may often be taken by suddenly turning over an old log partly 

 buried in sand. 



320 (1052). Geopinus inckassatus Dej., Spec. IV, 1828, 21. 



Oblong, convex. Brownish-yellow ; front 

 and middle of thorax and disk of elytra 

 often more or less piceous. Thorax one-half 

 broader than long, gradually narrowed be- 

 hind the middle ; base a little narrower than 

 elytra, region of the hind angles depressed. 

 Elytra sinuate near apex, striae moderately 

 deep, not punctured ; intervals slightly con- 

 vex. Length 13.5-15 mm. (Fig. 93.) 



Lake, Laporte, Marion and Vigo coun- 

 ties; scarce. April 23-June 15. Four 

 were taken at electric light in Terre 



Fig. 93. Line shows natural length. Haute Oil June 9. 



LXII. Nothopus Lec. 1853. (Gr., " spurious + foot. ") 



Represented in the United States by a. single rather large, ro- 

 bust black or piceous beetle, having the outer angle of front tibia 

 narrowly prolonged and rather deeply sinuate above the tooth. It 

 occurs from the Rocky Mountains eastward to Illinois and rarely to 

 northern Indiana. 



