440 CASEY 



Form nearly similar but with more inflated elytra and shining, the 

 surface only feebl}' alutaceous posteriorly, glabrous, very deep 

 black, the legs and antenna feebly rufo-piceous ; head rela- 

 tively larger, less distinctly narrower than the prothorax, with 

 less elevated umbo and less minute but sparse punctuation, the 

 surface not so smooth and with a single short plica near the 

 carinai ; tenth antennal joint somewhat more elongate, obviously 

 longer than wide ; prothorax larger, much less transverse, not 

 quite a third wider than long, less inflated at the sides, the latter 

 parallel and broadly arcuate, becoming moderately strongly con- 

 vergent and feebly arcuate in about basal half, sinuate very near 

 the angles, the apical angles thickened and prominent though less 

 so than in brevis^ the punctures very uneven, generally rather 

 well separated medially but becoming closer laterally and com- 

 posed of coarse and moderately small punctures intermingled; 

 elytra more elongate-oval though scarcely one-half longer than 

 wide, with very feebly impressed series of unusually coarse, deep 

 and less widely spaced punctures, gradually becoming obsolete 

 only at apical fourth or fifth, the lateral series approaching the 

 apex still closer as in brevis ; abdomen shining, finely, sparsely 

 punctured, the basal segment (c?) having a moderately large, 

 circular and unimpressed fulvo-pubescent fovea, surrounded for 

 some distance on all sides by minute and close-set punctures, this 

 feature being much more obvious than in brevis. Length 7-5 

 mm.; width 3.5 mm. (c?). Texas (El Paso), — G. W. Dunn. 



mixtus n. sp. 



17 — Color brownish-black, paler beneath, subopaque ; head coarsely 

 and densely punctured and longitudinally finely sulcate, the umbo 

 moderately prominent, finely punctured; prothorax slightly 

 broader than long, the sides moderately rounded, the surface 

 convex, coarsely and densely but not confluently punctured, the 

 head and pronotum with sparsely placed short yellow hairs ; 

 elytra oval, moderately convex, faintly striato-punctate, the inter- 

 stices having two rows of very faint pimctures, sparsely pubes- 

 cent, with the short hairs arranged between the rows of larger 

 punctures; prosternum and side-pieces coarsely and densely punc- 

 tured, the meso- and metasterna very coarsely so, the abdomen 

 finely and sparsely. Length 7.5 mm. Localitv not stated. 



subpubescens Horn 



Color piceous, the form stout; head narrower than the prothorax, 

 aciculate and coarsely punctured, the imibo moderate; prothorax 

 transverse, coarsely and confluently punctate and rugose ; el^'tra 

 rather closely, less finely punctate than usual, but with the punc- 

 tures scarcely forming series. Length 6.25 mm. California 

 (Vallecito, — near Julian?) punctatus Lee. 



The species from Icev/'s to hisirio, in the table, are rather 

 closely allied among themselves and are geologically recent 



