THE GROUND BEETLES. 



193 



Lake County; rare. June 2. A single •specimen taken by Wbl 

 eott near Indiana Harbor. The thorax is less narrowed behind 

 than in the other two species. Previously recorded from "Alaska, 

 Lake Superior, New Mexico and Northern California." 



T. kirbyi Horn, 6 mm. in length, piceous, with base and sides of 

 elytra paler and hind angles acutely rectangular, is knoAvn from 

 Ontario and Ohio. 



*862 (1166). Tachycellus atrimedius Say, Trans. Amer. Phil. Soc II. 

 1823, 39 ; ibid. II, 466. 

 Elongate-oblong. Pale reddish-brown above, black beneath; bead and 

 disk of thorax black ; disk of elytra with an ill-defined blackish or piceous 

 cloud; legs and three basal joints of antenme dull yellow. Thorax sub- 

 quadrate, distinctly narrowed behind the middle, not wider at base than 

 long; basal impressions broad, rather shallow, coarsely punctured. Elytra! 

 striae rather deep ; intervals subconvex. Length 6.5-7.5 mm. 



Throughout the State; frequent. January 1-October 5. 



*363 (1168). Tachycellus badiipexxis Hald.. Proc. Phil. Acad. Nat. Sci.. 

 I, 1842. 302. 



Elongate-oblong, rather slender. Head and thorax black ; antennas and 

 elytra piceous ; legs, basal joints of antennas and edge of thorax dull yellow, 

 femora and tips of tibiae often darker. Thorax about as long as broad; 

 sides regularly rounded from apex into base; basal depressions deep, nar- 

 row, sparsely punctured. Elytral striae fine; intervals flat. Length 5.5- 

 6.5 mm. 



Throughout the State; frequent. February 24-December 7. 



Subtribe C. (Anisodactyli.) 

 This group comprises the single genus : 



LXXIII. Antsodactylus Dej., 1829. (Gh\. ''unequal-toed.") 



A large genus of medium sized black, brownish or piceous beetles 

 having the dilated joints of the tarsi of male spongy pubescent in- 

 stead of scaly beneath. They occur in various situations, the ma- 

 jority being found in dry. upland, open woods, beneath logs and 

 other cover. A number of our species hibernate and some of them 

 are very common at electric light. Of 31 specimens dissected by 

 Dr. Forbes. 21 per cent, of the stomach content was found to be of 

 animal, and 79 per cent, of vegetable origin, mainly seeds, pollen of 

 grasses, etc., so that it is very doubtful if this genus can be classed 

 among the beneficial CarabidaB. The papers treating of the genus 

 are as follows : 



