464 



FAMILY XI. STAPHYLHSTIDiE. 



with a very deep triangular excavation, and B. pallipennis Say, 9 

 mm. in length, with head blackish, suture and tips of elytra fuscous; 

 gula with a shallow excavation. 



Geoup B. 



Small or medium-sized species having the side margins of thorax 

 acute, the flanks concave; mandibles stout, strongly toothed near 

 the tip ; rows of spines on front tibia 1 widely separated. 



KEY TO INDIANA SPECIES OF GROUP B. 



a. Side pieces of presternum very distinctly triangular, the sutures di- 

 rected to the front angles of the thorax. 

 1). Head coarsely punctured; chestnut brown, shining; elytra and legs 

 paler. semifebbugineus. 

 1)1). Head not or obsoletely punctured; thorax not wider than long, 

 coarsely punctured ; chestnut brown, elytra and abdomen reddish- 

 brown. 894. FUMATUS. 

 aa. Side pieces of prosternum not triangular, the sutures parallel with the 

 side margin of the under surface or flank of thorax, 

 c. Reddish-brown ; head and thorax darker ; tip of abdomen black. 



895. analis. 



cc. Blackish-brown; elytra, antennce and legs brown; dorsal impressed 

 line of thorax wanting. , nitidicollis. 



B. semiferrugineus Lee, 4.5 in length, occurs from Michigan to 

 Florida and has been taken near Cincinnati. No authentic speci- 

 men has been seen from the State. 



894 (2719). Bledies fumatus Lee. N. Sp. N. Amer. Col., I, 1863, 52. 

 Elongate, robust, subcylindrical. Dark chestnut or reddish-brown, shin- 

 ing ; head and thorax piceous, legs and tip of abdomen paler. Head finely 

 granulate, sparsely and indistinctly punctulate. Thorax not wider than 

 long, sides strongly rounded into base ; disk coarsely and rather closely 

 punctate, the median line deep. Elytra slightly wider and more finely 

 punctate than thorax. • Abdomen at base narrower than elytra, sparsely 

 punctate above, more finely beneath. Length 5.5-6.5 mm. 



Lake, Kosciusko and Vigo counties; rare. May 30- July 18. 



895 (2723). Bledius analis Lee. N. Sp. N. Amer. Col.. I, 1S63, 52. 

 Elongate, slender, subcylindrical. Pale reddish-brown; head, thorax 



and tip of abdomen black; elytra fuscous about the scutellum and along 

 the suture to middle. Head finely granulate, sparsely and finely punctate. 

 Thorax as wide as long, sides straight to behind middle, thence strongly 

 rounded into base; disk not granulate, coarsely and rather closely punc- 

 tate, the median line fine but distinct. Elytra deeply and rather closely 

 punctate. Abdomen nearly smooth above, sparsely punctulate beneath. 

 Length 4 mm. 



Lake, Putnam and Dubois counties; scarce. May 12-July 10. 

 Occurs under cover along the banks of streams and lakes. 



