62 



FA M ELY II .- — CARABTD^E. 



lengthwise grooves ; thorax subquadrate, apex truncate, sides • 

 straight to near base, then strongly oblique or rounded; disk 

 smooth, with an entire median and two shorter impressed lines; 

 front tarsi more or less dilated in both sexes. Like the members of 

 the three preceding genera, they live mostly in damp sandy places. 

 Three of the eight species known from the United States have been 

 taken in Indiana. 



KEY TO INDIANA SPECIES OF SCHIZOGENIUS. 



(/. Color blackish ; elytra somewhat depressed, stria? deep, finely and close- 

 ly punctate. 67. lineolatus. 

 (/(/. Color reddish-brown. 



h. Elytra cylindrical, strhe indistinctly punctured. OS. ferbugineus. 

 bl). Elytra strongly depressed; hind angles of thorax prominent before 

 the base. 69. amphibius. 



67 (283). Schizogenius lineolatus Say, Trans. Amer. Phil. Soc, II, 1823, 

 22 ; ibid. II, 451. 



Uniform blackish or piceous above ; dark reddish-brown beneath ; an- 

 tenna? and legs somewhat paler. Length 3.5-4 mm. 



Vigo and Franklin counties ; rare. April 1-June 11. 



GS (285). Schizogenius ferbugineus Putz., Mon., 1846, 653. 



Color- uniform pale reddish-brown; elytral stria? deep, punctures feeble. 

 Length 3 mm. 



Beach of Lake Michigan near Millers, and Pine, Lake County ; 

 frequent locally. April 29-July 23. 



69 (286). Schizogenius amphibius II aid., Proc. Phil. Acad. Nat. Sei.. I. 

 1842, 299. 



Dark reddish-brown ; elytra darker than the other parts. Hind angles 

 of thorax represented by a distinct tooth or cusp before the base. Length 

 3-3.5 mm. 



Fountain, Clay and Owen counties ; rare. June 15-August 13. 

 Known from New York and Missouri. 



XV. Ardistomis Putz. 1846. (Or., " high + mouth.") 

 Small black or greenish shining beetles having the thorax round- 

 ed, considerably narrower than elytra; mandibles slender, pro- 

 longed, not curved. They occur in low moist woods, beneath bark, 

 stones and rubbish. Five are known from the United States, two 

 of which have been taken in Indiana. 



