THE SHORT- WINGED SOAVENO I" I! I5K KT L KS. 



465 



B. nitidicollis Lee, 3 mm. in length, is recorded from New York, 

 Michigan and Missouri. 



Group C. 



Small or medium sized 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 OE GROUP C. 



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



b. Size larger, 6-6.5 mm. ; median fovea of head very large ; elytra red- 

 dish-brown, fuscous near scutellum. 896. borealis. 

 lib. Size smaller, not over 4 mm. 



c. Head not punctate ; elytra piceous ; 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. 89S. annularis. 

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

 ly granulate ; abdomen black throughout. 899. confusus. 

 oar. 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. 



Elongate, 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 ; antenna? 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 6-6.5 mm. (Fig. 167.) 



Lake County ; rare. May 19-May 28. Three specimens from 

 near Pine, beneath clumps of cactus. 



897 (9696). Bledius stabilis Casey. Ann. N. Y. Acad. Sci.. V, 1SS9, 61. 

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



legs and antenna? toward base, dull yellow. Head distinctly narrower than 



