THE GROUND BEETLES. 



70 



surrounded by a distinct ring, darker than the remaining surface 

 of elytra. 



B. sulcatum Lee., a member of the boreal fauna, has been taken 

 in Michigan and northern Illinois and should occur in northern In- 

 diana. 



99 (420). Bembidium sej mi; striatum Half!., Proc. Phil. Acad. Nat. Sci., I, 



1843, 303. 



Slightly elongate, convex. Nearly black, feebly bronzed, the elytra 

 often tinged with brownish ; antennae piceous, the basal joints and legs 

 dull yellow. Frontal grooves single, straight, parallel. Thorax subcor- 

 date. one-half wider than long, distinctly narrower at base than apex; 

 sides strongly curved in front, sinuate behind; basal impressions deep, 

 bistriate ; hind angles rectangular, carinate. Elytra one-half wider than 

 thorax, finely striate, the stria? with deep, rather distant punctures, these 

 obsolete on apical half ; intervals flat, with punctures as mentioned in 

 key. Length 3.7-4.2 mm. 



Putnam County; rare. October 17. Sifted from beneath dead 

 leaves above a hillside spring. The seta? arising from the dorsal 

 punctures are very distinct beneath a lens. Occurs from New Eng- 

 land to Kentucky. 



B. ohlongulum Mann.. 4.2-5. 5 mm. in length, has been taken in 

 Ohio and Michigan. It is a member of the boreal fauna and should 

 be found along the northern border of Indiana. Two specimens 

 were in the Stein collection without locality label. 



XVIII. Anillus Duval. 1851. (Or., ''without + light.'') 



Very small brownish species, having the eyes entirely wanting 

 and hind coxa? separated. They live in caves or under stones on 

 the slopes of wooded hills. Four species are known from the 

 United States, one of which has been taken in Indiana. 



100 (429). Anillus foetis Horn. Trans. Ainer. Ent. Soc, II. 1868, 127. 

 Elongate-oblong. Reddish-brown, shining ; antenna? and legs pale yel- 

 low. Head with a shallow groove each side of front. Thorax wider than 

 long, sides slightly curved to behind middle, thence feebly converging to 

 base, which is narrower than apex and squarely truncate ; disk with a 

 single bristle-bearing puncture each side near front angle, median line 

 fine, hind angles rectangular. Elytra with a few discal rows of very fine 

 punctures, some of which bear single, long, erect hairs ; the punctures ab- 

 sent on sides and apex, plainly visible only when viewed from the side. 

 Length 1.7-2 mm. 



Rare, or so small as to be overlooked. Two specimens were 

 taken from beneath stones on a wooded slope near Wyandotte Cave. 

 Crawford County. May 27. When their cover was removed they 

 ran aimlessly about, instead of seeking some new retreat. 



[6—23402] 



