THE GROUND BEETLES. 



197 



371 (1190). Anisodactylus nigeita Dej., Spec. IV. 1820, 141). 



Very close to interpunctatus. Dr. Horn states (loc. rtt: under gepus) 

 that he could, find no difference except that in nigrita there are two clypeal 

 punctures on each side, while in interpunctatus there is but one. Length 

 12.5 mm. 



Lake and Kosciusko counties; rare. May 1— July 5. 



372 (1191). Anisodactylus melanopus Hald.. Proc. Phil. Acad. Nat. Sci., 



I, 302. 



Very similar to A. agricola; differs mainly in having- two bristle-bear- 

 ing punctures instead of one on each side of clypeus. This may be a con- 

 stant difference, but I doubt its specific rank. However, it is much used 

 by Horn in his paper, on which my key is mainly based. Length 13-14 mm. 



Kosciusko. Putnam and Knox counties; rare. March 25- Au- 

 gust 18. 



373 (1194). Anisodactylus discoideus Dej.. Spec. V. 1829, 831. 

 Elongate-oblong. Piceous, shining ; -antennae, legs and sides of thorax 



and elytra brownish-yellow. Thorax very little wider than long, narrowed 

 at base; sides curved in front, feebly sinuate behind, very narrowly de- 

 pressed; hind angles strongly rectangular, basal impressions short and deep, 

 finely and sparsely punctate. Elytra wider than thorax, rather deeply stri- 

 ate ; intervals smooth, slightly convex. Length 10.5-11.5 mm. 



Throughout the State : frequent in sandv localities. April 11- 

 July 24. 



*374 (1195). Anisodactylus baltimoreksts Say. Trans. Amer. Phil. Soc. 



II. 1823. 33; ibid. II. 461. 



Oblong, rather slender. Piceous. shining; antennae, legs and elytra 

 pale, the latter often with darker discal cloud. Thorax distinctly wider 

 than long, basal impressions more shallow and sides more deeply sinuate 

 behind; otherwise resembles discounts, than which it is smaller, more de- 

 pressed and less shining. Length 9-10 mm. 



Throughout the State; common. January 21- August 26. 



Group C. (Haplocentrus.) 



This group is composed of species varying much in size, shape 

 and color, and agreeing only in possessing the characters of the 

 genus and in having the front tibial spur slender, and the elytra 

 striate and sinuate at tip. 



KEY TO INDIANA SPECIES OF GROUP C. 



a. Elytra with a distinct dorsal puncture, surface not pubescent; first 

 joint of middle tarsus of male glabrous or with a very small pubes- 

 cent space beneath. 

 h. Intervals of elytra convex, distinctly and finely punctate; vertex 

 with a red spot; length 12.5-14 mm. 375. verticalis. 



