92 FAMILY II. C-VEABIDri;. 



Fulton, Parke, Vigo, Jackson, Crawford and Posey counties; 

 scarce. Occiu-.s principalh' lieneath logs in deep shaded ravines. 

 April 13-Xovember 4. 



P rostratus Ne^\Ta., 1-1^16 mm., P. suhstriatus Lee. 12-14 mm., 

 and P. apalachius Horn, 12 mm. in length, have a known range 

 which favors the probability of their occurring in Indiana. 



Gbovp B. 



This group comprises black, medium sized species ranging in 

 length from 10 to 16 mm. They have two or tjiree dorsal punctures 

 on each elytron ; thorax narrowed behind and not margined at base, 

 except in permundus; the inner wings lacking except in obscurus. 

 The side pieces (epistema) of the metathorax are short, and nearly 

 as broad at apex as base. Of the seven species whose characters and 

 range are such as to be included in the group, five are represented 

 in the collection at hand, while two others perhaps occur in the 

 State. 



KEY TO SPECIES OF GROUP B. 



a. Thorax narrower at base than apex; prosternum not margined behind. 

 6. Outer strije of elytra Indistinct ; thorax finely margined ; elytral striae 

 not punctured. 124. obscurvs. 



6&. Outer strife of elytra nearl.v or quite as deep as inner ; thorax strong- 

 ly margined, 

 c. Dorsal punctures two (rarely three or four). 



d. Basal impressions of thorax linear, deep. lachrymosus. 



(Id. Basal impressions large, broad. 

 c. Hind angles of thorax earinate. 



f. Basal impressions without a tubercle. 125. coracixi s. 



//. Basal impressions with an obtuse flattened tubercle. 



126. STYGICVS. 



cc. Hind angles not earinate; impressions without a tubercle. 



127. RELICTl'S. 



cc. Dorsal punctnivs lour; hind angles earinate. suPERciuosrs. 



0(7. Thorax broader at liase than apex; prostenium margined behind; dor- 

 sal punctures three. IL's. permukdvs. 



124 (."i42). Pterostichus obscurus Say. Trans. ^Vrner. Phil. Soc, IV, 4S.') : 

 ibid. II, TiSS. 



Elongate, slender. Black ; antennse. tibiiv and tarsi dark reddish-brown. 

 Thorax somesvhat trapezoidal in shape, narrowed behind ; basal impressions 

 short, narrow, punctured, hind angles very obtuse, rounded. Elytra with 

 three dorsal punctures, the first and second on or near the third stria, the 

 third on second stria; intervals flat, stria- shallow. Length 10. .^12 mm. 



Throughout the State; scarce. April -t-Xovember 17. In one 

 specimen liefore me there are four dorsal punctures on one side 

 and three on the other. 



