i8o MEMOIRS ON THE COLEOPTERA. 



2.0 mm.; width 0.45 mm. New Mexico (Coolidge) and Colorado (Greeley 

 and Salida), \Yickham. 



Easily known from any of the preceding by the visibly, though 

 feebly, converging sides of the prothorax from base to apex, and 

 by the feeble median transverse basal impression. 



Strigota inculta n. sp. More slender, otherwise similar in coloration and 

 sculpture, except that the minute punctures are denser, and, on the abdomen, 

 nearly as close as in oppidana, the lustre slightly more alutaceous than in 

 -capida; head distinctly wider than long and very evidently inflated basally, 

 convex, the eyes rather large and at but little more than their own length from 

 the base, but not prominent, the carinae fine, short and basal ; antennae piceous, 

 gradually rather strongly incrassate, moderately long, the basal joint tes- 

 taceous and a little longer than either of the next two, which are subequal, 

 the fourth slightly longer than wide, the tenth but little wider than long, 

 the last pointed, not quite as long as the two preceding; prothorax more 

 transverse than in I'apida, fully two-fifths wider than long, the sides sub- 

 parallel and evenly, strongly rounded, much wider than the head and fully 

 as wide as the elytral base, unimpressed; elytra well developed, with feebly 

 diverging sides, the suture nearly a third longer than the prothorax; abdomen 

 rather slender, much narrower than the elytra, subparallel basally, feebly 

 narrowed behind the middle, the margins somewhat thin, the tergites long, 

 the fifth fully one-half longer than the fourth. Length 2.2 mm.; width 

 0.4 mm. Nevada (Reno). 



This species may be distinguished from the preceding by its more 

 transverse and parallel prothorax, rather less elongate and more 

 distally incrassate antennae, narrower and more slender abdomen, 

 with thinner margins and in some other features. 



Strigota perplexa n. sp. Moderately stout and fusoid, somewhat alu- 

 taceous in lustre, very finely and densely punctate and deep black throughout, 

 the elytra not obviously paler, the legs very pale piceo-flavate; head wider 

 than long, slightly inflated at base, the eyes unusually convex and at distinctly 

 more than their own length from the base, the cannae very fine but extending 

 beyond the middle; antennae rather long, gradually and very distinctly 

 incrassate and thick distally, deep black throughout, the third joint scarcely 

 so long as the second, much more rapidly obconic, and, at tip, thicker than 

 the second, the fourth a little longer, the fifth as long as, wide, the outer 

 joints evidently transverse, the last large, rather longer than the two pre- 

 ceding ; prothorax very moderately transverse, subparallel and rounded at 

 the sides, much wider than the head and barely as wide as the elytral base, 

 unimpressed; elytra well developed, with feebly diverging sides, the suture 

 a fourth longer than the prothorax; abdomen evidently narrower than the 

 elytra, evenly though feebly tapering throughout, with nearly straight sides 

 and only moderately thick margins, the fifth tergite but little longer than 

 the fourth. Length 2.0 mm.; width 0.48 mm. Colorado (Boulder Co.). 



