78 I'ROCEEDIXGS OF THE ACADEMY OF [Feb., 



three-fourth?, faiutly sinuate behind ; marginal bead fine, narrowly 

 reflexed ; dis^k very moderately convex, somewhat transversely 

 rugose in basal half; median line fine, abbreviated before and 

 behind ; anterior transverse impressions feeble, the posterior more 

 marked ; basal impressions broad, moderately shallow, bistriate ; 

 hind angles subobtuse, carinate, carinje parallel to the margin. 



Elytra scarcely one-half wider than thoi-ax, about one-half 

 longer than wide, oblong-oval ; deeply striate ; strise entire, more 

 finely impressed toward tip, fifth grooved at tip, strongly pimctate 

 to near apex, then obsoletely so ; intervals just perceptibly convex, 

 the third with the first dorsal pimcture just posterior to basal fourth, 

 the second about one-third from apex. Anterior tarsi of male 

 with first two joints dilated, first strongly so, quadrate, inner ante- 

 rior angle feebly prolonged, strongly convex dorsally ; second mod- 

 erately dilated, inner anterior angle moderately produced. Length 

 3.2 mm. 



Diagnostic characters. — Closely related to timidum, from wdiich 

 it can be recognized by its coal-black color, deeply striate elytra, 

 and strongly punctate strise. 



Described from three S2:)ecimens in the Fuchs, Van Dyke and my 

 own collections. 



Type collected at Blue Lakes, Alpine county, Cal. ; co-types in 

 Eldorado and Placer counties, Cal. 

 Bembidium concinnam n. sp. 



Form moderately robust. Color piceous ; surface shining, finely 

 reticulate, with a very faint bluish reflection. 



Head wider than thorax at apex ; antennae nearly one-half as 

 long as body. Prothorax subquadrate, rather more than one-third 

 wider than long; base equal to apex, the latter truncate in circular 

 arc; median line fine but distinct, obsoletely abbreviated in front 

 and behind; transverse impressions distinct; sides arcuate in an- 

 terior two-thirds, nearly straight or feebly sinuate and converging in 

 posterior third; margin narrowly reflexed; marginal and basal setje 

 long; basal impressions deep and sharply defined, bistriate; hind 

 angles obtuse, not rounded, carinate; carinse but slightly divergent 

 from margin. 



Elytra oblong-oval ; one-half wider than thorax, about one-half 

 longer than wide, and widest near middle ; striate, strise feebly 

 impressed, distinctly punctate to jxjsterior fourth, then obsoletely so 



