74 PROCEEIHNGS OF THE ACADEMY OF [Feb., 



Bembidium obscuripenne u sp. 



Elongate, very moderately convex ; color black and shiuiug, 

 with an obscure brownish humeral spot extending backward to near 

 middle third ; a similar spot at junction of middle and posterior 

 thirds. 



Head slightly Avider than thorax at apex ; eyes large ; antennse 

 about one-half as long as body. 



Prothorax about one-third Avider than long, slightly wider at base 

 than at apex ; the latter slightly emarginate iu circular arc ; median 

 line entire, moderately fine; transverse impressions distinct, the 

 posterior deeper; basal impressions rugulose, broad, deep and bi- 

 striate; sides arcuate in anterior three-fourths, feebly sinuate in 

 posterior one-fourth, with margins narrowly reflexed, marginal 

 sulcus moderately broad ; basal angles rectangular, cariuate, carinas 

 nearly parallel to median line. 



Elytra oblong-ovate, about one-half wider than thorax, one-half 

 longer than wide, striate, striae moderately impressed, entire or 

 feebly impressed at apex, strongly punctate to one-fourth distance 

 from apex ; third stria with first dorsal puncture a slight distance 

 posterior to basal one-fourth, second a slight distance anterior to 

 basal fourth, intervals flat. Legs and abdomen dark piceous to 

 black. Length 5-5.5 mm. 



Tarsi. — First two joints of anterior tarsi of male dilated; first 

 subquadrate with inner anterior angle prolonged as usual, second 

 moderately dilated. 



Biagnodic character)!. — Closely related to longulum. Basal angles 

 of thorax rectangular, striae subentire, more convex form and pres- 

 ence of brownish elytral spots, with many other characters if Mr. 

 Hay ward's measurements of longulum are correct. 



Two specimens collected in Oregon. Fuchs' collection. 

 Bembidium humboldtensis n. sp. 



Form elongate, somewhat robust, convex ; color coal black ; sur- 

 face very smooth and shining. 



Head as wide as thorax at apex ; antennae less than one-half the 

 length of the body. 



Prothorax convex, about one-fourth wider than long, length 

 equal to base, as wide or slightly Avider at base than apex, surface 

 smooth ; aj^ex truncate ; base evenly and feebly arcuate ; median 

 line distinct, slightly abbreviated before and behind ; transverse 



