COLEOPTERA OF SOUTHERN CALIFORNIA. 227 



Sierras, occurring with P. obliterata and P. minuta. It 

 is rather close to P. obliterata, but the latter species is 

 on the average a trifle larger, the head and thorax are 

 distinctly longitudinally strigose, the tempora are longer, 

 the antennae a little stouter, and the impressed lines of 

 the dorsal surface of the abdomen are more strongly 

 arcuate. In P. obliterata the thorax is almost always 

 noticeably paler than the head and elytra, but never 

 distinctly so in P. detrita in my experience. 



31. Pseudopsis minuta, sp. no v. 



Yellowish browu or darker, head piceous, antennae, legs, and tip of 

 abdomen paler. Punctuation very fine anteriorly, more distinct on the 

 abdomen; pubescence short, sparse, and indistinct. Head a little narrower 

 than the prothorax, with three acute and entire longitudinal carinas, one 

 median, the others lateral; tempora about equal to the diameter of the eye. 

 Prothorax a little narrower than the elytra, transverse, sides parallel, feebly 

 arcuate, and at the middle indistinctly subaugulate; disk with four equi- 

 distant and nearly straight longitudinal cariuae. Elytra as long as wide, 

 each acutely tricostate; the two inner costae curved inwardly at the apex. 

 First four dorsal segments of the abdomen strongly arcuately impressed at 

 base, their posterior margins bearing a series of widely spaced stout scales. 



Length, 1.7-1.9 mm. 



Found in the canons of the southern Sierras. 



32. Bledius deceptivus, sp. nov. 



Eather robust, jjiceous black, elytra brownish black, legs and antennae, 

 except the outer joints, rufotestaceous. Head, apical portion of prothorax, 

 and abdomen, finely reticulate; siirface shining throughout, except the 

 head, which is but feebly so; pubescence pale, short and sparse, longer on 

 the abdomen, especially beneath. Head, including the eyes, slightly nar- 

 rower than the prothorax; antenna! prominences moderate, polished; 

 epistomal tubercles nearly obsolete; frontal suture arcuate, sharply de- 

 fined; vertex evenly convex, the median fovea small; surface behind the 

 frontal suture rather coarsely but feebly punctate, the punctures lacking 

 along the median line, otherwise separated by about their own diameters. 

 Second joiiit of antennae a little longer than the third, joints six to ten 

 gradually wider and slightly transverse. Prothorax a little wider than, 

 long, sides parallel and nearly straight in slightly more than apical half, 

 then broadly rounded and convergent to base, the basal angles rounde 



