io2 MEMOIRS ON THE COLEOPTERA 



but with a few widely scattered minute hairs; abdomen moder- 

 ately, asperulately punctate. Length 17.5 mm.; width 9.7 mm. 

 A single example of unknown sex labeled " Cal." in the Levette 



cabinet, but perhaps erroneously pigra n. subsp. 



C Oblong-ovoidal, larger and stouter, black throughout, shining, the 

 anterior parts alutaceous; head opaque, with rather scattered 

 moderate punctures, each with a small brown hair; prothorax 

 large, three-fifths wider than long, almost three-fourths as wide 

 as the elytra, nearly parallel and with subevenly, moderately 

 rounded sides, the basal angles only moderately produced pos- 

 teriorly, less acute than in pigra, the surface nearly similar but 

 much more broadly concave and more gradually, moderately 

 reflexed laterally, the anterior angles similarly notably blunt and 

 rounded; elytra two-fifths longer than wide, with rounded sides, 

 widest at the middle, the costse feebler than in pigra, similar 

 posteriorly though more rapidly rounding inwardly at the sides, 

 the intervals less concave, less coarsely, more transversely and less 

 closely rugose, the surface with very minute sparse and incon- 

 spicuous granules, each bearing a very small dark fulvous hair: 

 abdomen minutely punctulate and imbricato-rugulose. Length 

 20. o mm.; width 10.8 mm. One example labeled like the type of 



pigra plena n. subsp. 



D Oblong-oval, moderately convex, piceous-black, shining, the 

 anterior parts alutaceous; head rather finely, loosely, punctate, 

 the minute hairs indistinct; prothorax large, three-fourths as wide 

 as the elytra, two-thirds wider than the median length, the sides 

 subevenly and unusually strongly rounded from the rather acute 

 apical to the produced and acute basal angles; surface only moder- 

 ately coarsely, rather sparsely but unevenly punctate, becoming 

 densely so laterally, the sides broadly concave, rather strongly, 

 gradually reflexed and transversely rugose; elytra two-fifths 

 longer than wide, widest at the middle, rather acute posteriorly, 

 the sides arcuate, the discal costae moderately elevated, their 

 crests fine and acute, their posterior ends free, not at all anasto- 

 mosing, the first extending more than half way down the convex 

 declivity, terminating abruptly opposite the end of the marginal 

 carina, the second ending abruptly near the upper limit of the 

 declivity; intervals with strong rugae, forming transverse spurs 

 from the ridges, the surface smooth, minutely, remotely and 

 inconspicuously granulate and with small but rather evident 

 palish hairs. Length (c?) 17.0 mm.; width 9.1 mm. The type 

 without indication of locality but probably taken in Colorado. 



imperfecta n. subsp. 



Elytral humeri very obtuse, broadly rounded and subobsolete, the elytra 

 very strongly narrowed basally. Body suboblong, moderately 

 stout, strongly convex, shining, the anterior parts dull black, other- 

 wise subrufescent; head opaque, rather closely but not very coarsely 

 punctate; prothorax very short and broad, four-fifths as wide as the 

 elytra, very nearly twice as wide as long, the apex much narrower 

 than the base, rather deeply, evenly sinuate as usual, with the angles 



