TIIK SHORT-WINGED SCAVENGER BKKTLKS. 



465 



/>. nili<licr>llis Lee , )J nun. in length, is recorded from New York, 

 Michigan and Missouri. 



GROUP C. 



Small or medium si/ed forms having the side margin of thorax 

 acute; prosternal sutures straight; mandibles with two acute teeth 

 on the inner side ; fissure of front coxal cavities open and large. 



KEY TO INDIANA SPECIES OF (iKOl'P C. 



it. Head and thorax finely granulate, the former flattened. 



1>. Size larger. <>-<;..."> nun.; median fovea of head very large; elytra red- 

 dish-brown, fuscous near scutollum. S9G. COREALIS. 

 lib. Size smaller, not over 4 mm. 



c. Head not punctate; elytra picemis; length 3.5 mm. 



897. STABILIS. 



cc. Head punctate ; elytra reddish-brown. 



<1. Thorax with hind angles distinct, its disk less densely granu- 

 late; tip of abdomen darker than base. SOS. ANNULARIS. 

 (Id. Thorax with hind angles indistinct, rounded, its disk very dense- 

 ly granulate ; abdomen black throughout. 899. CONFUSUS. 

 an. Head and thorax polished, the former convex, the latter without hind 

 angles; piceous, elytra dull yellow, the suture fuscous. 



900. EMARGINATUS. 



896 ( ). BLEDIUS BOREALIS sp. nov. 

 Khaigate. robust, subdepressed. Black, shin- 

 ing; legs and elytra chestnut brown, the latter 

 fuscous at middle of base and for a short dis- 

 tance along the suture; antenn;e dusky toward 

 apex, slender. Head much narrower than tho- 

 rax, very finely granulate, coarsely and sparsely 

 punctate, the median fovea large and deep, the 

 suture distinct. Thorax at apex slightly wider 

 than long, sides straight and parallel for two- 

 thirds their length, thence rapidly converging to 

 base, the latter one-half as wide as apex; disk 

 convex, finely and densely granulate, coarsely 

 and sparsely punctate, smooth along the middle 

 and on apical third, median line fine; hind an- 

 gles small but distinct. Elytra scarcely wider 

 and but slightly longer than thorax, finely and 



rather sparsely punctate. Abdomen above and beneath finely granulate, 

 very sparsely and finely punctate. Length 0-0.5 mm. (Fig. 167.) 



Lake County; rare. May 10-May '2S. Three specimens from 

 near Pine, beneath clumps of cactus. 



897 (9696). BLEUIUS STABILIS Casey, Ann. N. Y. Acad. Sci., V, 1889, 61. 

 Elongate, rather robust, depressed. Black; thorax and elytra piceous; 



legs and anleniia* toward base, dull yellow. Head distinctly narrower than 



Fig. 167. (Original.) 



