108 THE CANADIAN ENTOMOLOGIST. 



Variety 13. Legs chestnut. 



C. Tibise and tarsi chestnut. 

 From the number of specimens collected in the expedition, I should con- 

 jecture this to be one of the most common of North American insects. It 

 appears, however, not to have been noticed by Say, nor was it amongst those 

 collected by Dr. Bigsby in Canada, or by Dr. MacCulloch and Capt. Hall in 

 Nova Scotia. [According to LeConte an erroneous determination for P. 

 luczotU, Dej., a species taken in Ontario and Quebec] 



41. Omaseus [Pterostichus] Nigrita, Curtis. — [This is P. caudicalk. 

 Say (Ent. Works, ii. 480); it has been taken at Ottawa by Mr. Billings.] 



[33] 42. Omaseus [Pterostichus] picicornis, Kirhy. — [Previously 

 described as P. mutus by Say (Ent. "Works, ii. 470) ; taken in Canada and 

 the United States.] 



[34] 43. Stereocerus [Amara] similis, Kirhy. — Plate viii. fig. 1. — 

 Length of body h\ Hues. A pair were taken in lat. 54°. 



Body of a piceous-black, glossy. Palpi piceous; antennae chestnut; 

 frontal impressions deep, rather curving; occiput punctured with scattered 

 punctures; prothorax nearly square with curved sides; basilar impressions 

 wide, punctured, deeply bisulcate, with an elevated little ridge between them 

 and the margin : elytra bronzed, furrowed, furrows scarcely punctured : legs 

 pale chestnut. In the 9 the elytra are not bronzed, the legs are darker, and 

 the terminal joint of the palpi is longer. 



[35.] Curtonotus [Amara] convexiusculus, Stephens. — Length of 

 body b\ lines. Taken in lat. 65°. 



Body dark piceous, sometimes a little bronzed. Antennae and palpi 

 rufous; frontal impressions short, connected by a rather deep furrow; pro- 

 thorax constricted and punctured at the base, depressed on each side ; basilar 

 impressions bisulcate; posterior angles acute, recurved; elytra furrowed, fur- 

 rows punctured : sides of the ventral segments of the abdomen somewhat 

 punctured and wrinkled, those of the mid-breast grossly punctured : legs 

 chestnut. 



[LeConte considers this an erroneous determination, and places it, with a 

 mark of interrogation, as a synonym of his A. laticoUis, stating (Pro. Acad. 

 Nat. Sci., Phil., June, 1855, p. 347,) respecting the latter that it is " found 

 in Nebraska Territory near the Rocky Mountains. Very similar to the Euro- 

 pean A. cmvexiuscula, but in comparison with that species the thorax is 

 more rounded on the sides, more narrowed behind, and more finely mar- 

 gined."] 



45. Curtonotus [Amara] rufimanus, Kirhy. — Length of body 5 

 lines. Several taken in lat. 54°. . 



