5o6 CASEY 



the humeri obtuse but angular and distinct, the sculpture similar 

 though rather finer, the alternate series toward the sides not 

 prominent ; abdomen more finely and sparsely punctured medially 

 but as coarsely so laterally ; elytral base exactly equal in width to 

 the base of the prothorax, rectilinear and transverse beyond the 

 peduncle, sinuate and convexly sloping medially as usual. Length 

 3.8 mm.; width 1.2 mm. California (San Diego to Vallecito). 



delicatulus Lee. 



Form somewhat similar but shorter and rather more convex, shining, 

 black, the legs rufo-piceous ; head and eyes nearly similar, the 

 antennae a little shorter and stouter ; prothorax narrower and less 

 transverse, two-thirds wider than long, nearly similar in form and in 

 its even deep apical sinuation, the apical angles a little less blunt, 

 the punctures throughout similarly close-set but rather stronger ; 

 elytra decidedly shorter and more rapidly and obtusely ogival at 

 apex, somewhat wider than the prothorax and barely two and one- 

 half times as long, the sides parallel, evenly and moderately arcu- 

 ate to the humeri, the latter and base of the elytra as in delicatulus ; 

 sculpture almost similar though rather less fine and somewhat 

 sparser, the alternate series distinctly prominent laterally ; abdomen 

 deep black, pale at tip, finely, sparsely punctate medially. Length 

 3.6 mm.; width 1.2 mm. California (San Diego). 



atratus n. sp. 



7 — Form nearly as in delicatulus^ somewhat less shining, dark pice- 



ous-brown in color ; head nearly as in delicatulus but a little 

 larger, more strongly and closely asperato-punctate and with the 

 upper lobe of the eyes a little larger, more elongate and less tri- 

 angular ; prothorax less transverse, one-half to three-fifths wider 

 than long, the anterior angles more anteriorly prominent as well 

 as not blunt, otherwise nearlv similar in form and sculpture ; elytra 

 rather more obtusely ogival posteriorly and a little wider than the 

 prothorax, otherwise similar throughout to those of delicatulus^ 

 except that the sides are somewhat less arcuate ; abdomen very 

 finely, sparsely punctured medially, moderately coarsely and 

 closely so laterally, especially toward base. Length 3.2-3.9 mm. ; 

 width 1. 08-1. 3 mm. Utah (southwestern), — C. J. Weidt. 



brunneus n. sp. 



8 — Body more slender, moderately convex and shining, glabrous as 



usual ; head nearly as in delicatulus throughout, the eyes a little 

 more elongate; prothorax relatively much broader, barely two- 

 thirds wider than long, subparallel, the sides subevenly and some- 

 what strongly arcuate, only a little more converging basally, the 

 base only just visibly narrower than the apex, with the angles very 

 obtuse but distinct, the apical angles right and blunt, the apex 

 evenly and distinctly sinuate between them ; surface rather finely 

 and closely punctured medially, with the smooth line indistinct, 

 larger, dense and rugulose laterally ; elytra one-half longer than 

 wide, distinctly narrower than the prothorax and barely two and 



