ColeopteroJogical Notices, VI. 585 



so toward the sides, evenly convex. Elytra rather more than one-half longer 

 than wide, nearly one-half wider than the prothorax, scarcely visibly wider 

 hehind than at base, the sides subparallel; apex obtuse; disk somewhat 

 coarsely and closely punctate and feebly rugose, the sculpture feeliler toward 

 apex. Under surface shining, feebly pubescent. Length 2.2.5 mm.; 

 Avidth 0.9 mm. 



California. 



The type and only specimen known to me has the fifth ventral 

 rather short, trapezoidal and truncate, and the genital segment 

 strongl}" and evenly rounded behind, with the disk perfectly' even. 

 I am, however, not certain of the sex of this individual, for the 

 fifth ventral seems to be truncate in both male and female in this 

 section of the genus. 



4. I>. dispai* n. sp. — Somewhat short, strongly convex and suboval, 

 strongly shining, the integuments feebly reticulato-rugulose, black, the 

 legs ferruginous with the thighs darker; antenna black, piceo-testaceous 

 toward base; pubescence rather short and sparse, cinereous toward base 

 and near the apex of the elytra and on the head and pronotum, liner 

 and blackish elsewhere, devoid of erect hairs. Head rather more than 

 three-fourths as wide as the prothorax, moderately transverse, feebly un- 

 even, finelj' and si>arsely punctate, with the frontal impressions obsolete; 

 epistoma very short and transverse, the labrum small, transverse, truncate; 

 eyes small but prominent ; antennae slender, not quite as long as the head and 

 prothorax, very feebly and gradually incrassate, the tenth joint a little wider 

 than long, the tifth very slightly dilated. Prothorax fvally three-fourths wider 

 than long, the sides subparallel and distinctly arcuate, rather more evidently 

 so tOAvard base, the edges distinctly serriilate ; basal angles very obtuse but 

 not obliterated, the apical obtuse but distinct from above, rounded as usual 

 when viewed sublaterally ; apex slightly nari'ower than the base, both feebly 

 arcuate; disk finely but strongly, sparsely punctate throughout, the flanks 

 evenly convex and declivous, strongly and narrowly impressed along the lat- 

 eral edges at the basal angles; marginal fringe short but distinct. Elytra very 

 feebly dilated posteriorly, not quite one-half longer than wide, nearly one-half 

 wider than the prothorax, obtusely rounded behind; disk somewhat finely 

 and quite sparsely punctured. Ahdomen thinly clothed with short fine and 

 dusky-cinereous hairs. Length 1.75-2.0 mm. ; width 0.75-0.85 mm. 



California (north of San Francisco). 



This species is quite isolated, and is represented in my cabinet 

 b}^ four specimens taken in three localities ; these agree very well 

 among themselves, except that in one small example the pale 

 fulvo-cinereous hairs of the elytra spread almost evenly- over the 

 entire surface, but under more power the pale hairs near the mid- 

 dle of the elytra are readily seen to be mingled with the more 



