THE GROUND BEETLES. 



73 



84 (325). Bembidium nigrum Say, Trans. Amer. Phil. Soc, II, 182:*,, 85; 



ibid. II, 500 



Black, feebly bronzed, strongly shining; antennae fuscous, the basal 

 joints and legs reddish-brown. Thorax subquadrate, one-half wider than 

 long, slightly narrower at base than apex ; sides curved in front, very 

 feebly sinuate behind; basal impressions broad, deep, bistriate; hind an- 

 gles rectangular, finely carinate. Elytra one-half wider than thorax, striae 

 coarsely and deeply punctate. Length 3.7-4.5 mm. 



Putnam County; rare. July 10. Probably occurs sparingly 

 throughout the State. 



85 (341). Bembidium guexi Chaud., Rev. et Mag. ZooL, XX, 1868, 242. 



Moderately elongate, depressed. Head and thorax blackish-bronzed; 

 elytra dark brown or piceous, strongly shining ; antennae fuscous, the basal 

 joints and legs reddish-brown. Thorax one-half wider than long, very 

 slightly narrower at base than apex, hind angles subrectangular, indis- 

 tinctly carinate. Elytra nearly one-half wider than thorax, the five inner 

 striae entire, punctate, the sixth and seventh obsolete on apical half, the 

 seventh often wanting. Length 4.7-5.5 mm. 



Fulton, Vigo, Jackson and Franklin counties; scarce. April 

 14- August 20. Listed as B. planum Hald., which name was pre- 

 occupied. 



B. fug ax Lee, 5.5-6.2 mm, ; B. transversale Dej. ; B. ustulatiom 

 Linn., 5.2-6.2 mm., and B. postremum Say, 6-7 mm. in length, each 

 have a known distribution which might bring them within the limits 

 of Indiana, yet no specimens have as yet been seen from the State. 



86 (358). Bembidium picipes Kirby, Faun. Bor. Amer., IV, 1837, 54. 



Elongate, rather slender, moderately convex. Black, shining, some- 

 times slightly bronzed or bluish; elytra rarely with a submarginal pale 

 spot one-fourth from apex ; antennae piceous or fuscous, the basal joint 

 and legs reddish-brown. Thorax one-half wider than long, narrower at 

 base than apex; sides strongly curved in front, distinctly sinuate behind, 

 hind angles rectangular, carinate; disk with median line fine, basal im- 

 pressions deep. Elytra about one-half wider than thorax, rather deeply 

 striate, the fifth stria represented by a groove at apex. Length 5-6 mm. 



Southern half of State; frequent. April 11-October 6. Oc- 

 curs beneath stones by running water. 



Group C. 



The species belonging to this group have the dorsal punctures 

 on the third interval and the humeri rounded into the sides of the 

 elytra. It comprises the Indiana species of Groups XI to XXI, 

 inclusive, of Hayward. 



