488 CASEY 



Intervals usually somewhat elevated, punctate and bearing squamules 

 similar to those of the ridges 12 



9 — Pronotum broadly, feebly and subequally sulcate along the middle 



from apex to base 10 



Pronotum not sulcate, though generally feebly impressed near the 

 base II 



10 — Body moderatel}' slender, the elytra flattened above, dark rufo- 



piceous in color ; head large, much elongated, the sides distinctly 

 converging and feebly arcuate from the antennal prominences to 

 the broadly rounded basal angles, the base extending but little 

 laterall}^ beyond the neck, the surface not sulcate basally ; eyes 

 above elongate and narrow, small beneath as usual ; prothorax 

 relatively very small, three-fourths as wide and two-thirds as long 

 as the head, widest anteriorly, where the sides are rounded, thence 

 strongly converging and broadly sinuate to the base, the sides 

 fringed with long, close-set, yellow squamules but not the apex, 

 base or dorsal ridges, the surface sparsely squamulose, densely 

 punctate like the head, with two longitudinal obtuse ridges, sepa- 

 I'ated by an impressed sulcus throughout the length ; elvtra elongate, 

 evenly oval, evidently more than twice as long as wide, the yel- 

 lowish squamules of the ridges close-set and subdecumbent, the 

 marginal series only present in apical third ; abdomen shining, 

 sparsely and not very coarsely punctate. Length 3.6 mm. ; width 

 0.9 mm. California (Inyo Co.) sulcicoUis Horn 



Body shorter and much broader, the elytra duller, dark castaneous in 

 color throughout ; head large but much less elongate, densely 

 punctate, the sides more strongly converging and evenly arcuate 

 from the eyes to the neck, the yellowish squamules distinct, not 

 dense ; eyes above much shorter than in stilcicollis and with fewer 

 facets, similar beneath ; prothorax not as small as in s2dcicolUs and 

 much less elongate, only slightly longer than wide, the lateral fringe 

 similar, the apical squamules rather evident and with others scat- 

 tered over the low obtuse entire dorsal ridges, the surface densely 

 opaque; elytra oval, depressed, not at all more than twice as long 

 as wide, the sides rounding to the base, straighter and less rapidly 

 converging toward apex, the latter very narrowly ol^tuse, the yel- 

 low squamules along the ridges close-set and rather broad, subde- 

 cumbent, the marginal scries as in sulcicoUis; abdomen rather 

 more coarsely but sparsely punctured. Length 3.4-3.5 mm.; 

 width i.o mm. Southern California simulans n sp. 



11 — Form moderately slender, the size larger than in the two preceding 



species, piceous-black, dull orsubopaque ; head much less elongate, 

 only slightly longer than wide, the sides parallel and straight near 

 the middle, abruptly converging and nearly straight toward base to 

 the neck, densely punctured, with small scattered squamules, the 

 occiput narrowly and deeply canaliculate; eyes above shorter and 

 broader than usual, below nearly rounded, very small, of about 

 four facets ; prothorax large, only slightly shorter and narrower 



