June, 1920.] NoT^rA^• : Coleoptera. N. Y. 185 



B. nisficti))! wliich Col. Casey describes from the Catskill Mts. is the 

 same species which Hayward describes as B. planiuscnlum ^[ann. 

 (Mem. Col., VIII, p. 33). Col. Casey believes that B. planiuscnlum 

 and B. coviplauulum belong in the next group of his synopsis (1. c. p. 

 37). He separates the two groups (erasum) and (planatum) by the 

 convexity of the body and the strength of the outer stride of the elytra. 

 It should be hoticcd. however, that although he places rusticum in 

 the group (erasum) in wliich the body is more convex and the outer 

 strire o])solcte. he descril)es the species as having the seventh stria 

 distinct and the body rather depressed. 



Bembidium basicorne new species. 



Form rather short and broad, depressed, not very distinctly oval. Color 

 black, rarely with a feeble metallic shimmer on the head and thorax ; antenna;, 

 side margins of the thorax and elytra and the apical half of the sutural margins 

 of the latter piceous ; first joint of the antennae bright rufous ; femora blackish 

 piceous, apices of the latter and the tibiae paler, tarsi brownish testaceous : palpi 

 brownish. Head finely, thorax very obsoletely alutaceous. Elytra polished, 

 shining, distinctly opalescent. Head about three fourths the width of the 

 thorax, distinctly wider than the thorax at apex; eyes strongly convex, frontal 

 grooves broad, strong, connected with the foveate punctures of the clypeus ; 

 antennre moderately long and slender, reaching the basal third of the elytra ; 

 joints about three times as long as wide. Thorax one third wider than long; 

 about three fifths the width of the elytra, base slightly narrower than the 

 apex ; sides strongly rounded in front, oblique and slightly sinuate behind the 

 middle; posterior angles sharp and minutely rectangular, apex strongly emar- 

 ginate, apical angles prominent, rounded ; side margins rather wide, narrowly 

 reflexed at edge ; basal impressions broad rather deep, bistriate, obsoletely 

 sculptured, carina rather long and strong, median line strong, distinctly im- 

 pressed, subentire. Elytra about one third longer than wide, sides feebly 

 arcuate and divergent to apical two fifths, thence strongly rounded to the 

 apex; the first four striae distinct on the disk, the first two entire; outer striae 

 apex ; the first four striae distinct on the disk, the first two entire ; outer stri.-e 

 very close to the margin, confluent with it at basal fourth ; the stria: extremely 

 minutely and indistinctly punctate. The third stria bipunctate, the anterior at 

 basal third, the posterior at nearly apical fourth. Length 3.75 mm.: width, 

 1.5-1.6 mm. (^ 5. Three specimens. 



This species is allied to B. iridcsccns Lee. It occurs in the Adi- 

 rondack Mts. in numbers with the above three species and shows no 

 variation of importance. It dift'ers from iridcsccns in the absence of 

 the pale area at the apex of the elytra, its dark legs, the thorax slightly 



