160 Trans. Acad. Sci. of St. Louis. 



Length 3.1-4.6 mm.; width 0.85-1.22 mm. Texas (Galveston, Waco, 



Austin and Brownsville) and Mexico (Guanajuato). ..nitidicollis n. sp. 



Var. A — Abdominal and elytral sculpture rather stronger and less 



sparse, the elytral spots much reduced and forming a fine apical 



margin, somewhat broadened toward the suture. Texas (Austin) 



and California (Yuma). 



Form slender, the size minute, polished, piceous in color, the abdomen 

 blackish, each elytron with a relatively still larger subsutural flavous 

 spot; legs pale flavo -testaceous, the antennae blackish, piceo- 

 rufous toward base; head three-fifths as wide as the prothorax; an- 

 tennae as long as the head and prothorax, rather strongly incrassate 

 distally, the tenth joint fully twice as wide as long, the second and 

 third joints moderately elongate, the former distinctly the longer; pro- 

 thorax in form and sculpture nearly as in nitidicollis; elytra at the sides 

 slightly longer than the sides of the prothorax, the suture four-fifths 

 as long as the median line, the punctures fiae and extremely sparse; 

 abdomen as wide as the elytra, parallel, the punctures very sparse; 

 basal joint of the hind tarsi much shorter than in the preceding species, 

 distinctly shorter than the next two together. Length 2.25 mm. ; 

 width 0.65 mm. Texas (Brownsville), — H. F. Wickham-.nanellan. sp. 



20 — Elytra unusually short, the sides not as long as those of the protho- 

 rax. Body only moderately stout, parallel, shining, black, the elytra 

 pale piceo-rufous, becoming nubilously more flavate toward the suture 

 • and apex of each ; legs pale red-brown, the antennae black, only feebly 

 picescent at base; head relatively well developed, three-fifths as wide 

 as the prothorax, the antennae not as long as the head and prothorax, 

 with the last joint thickest, pyriform and as long as the two preceding 

 combined; prothorax small, transverse, the apex only slightly nar- 

 rower than the base, the sides strongly arcuate, the punctures laterally 

 very distinct and somewhat close-set; elytra finely, closely and asper- 

 ately punctate as usual, the suture two-thirds as long as the median 

 line of the prothorax; abdomen nearly as wide as the elytra, strongly, 

 rugosely and closely punctured as usual in this group of the genus. 

 Length 3.8 mm. ; width 0.93 mm. California (Newhall) ..innocua n. sp. 



Elytra normally long, the sides as long as those of the prothorax; form 

 stouter, the abdomen but little narrower than the elytra and parallel 

 as usual. Body polished, black, the elytra piceous-black, each with a 

 very large subflavous pale spot iu the position of that of himaculata but 

 less distinctly defined; legs rufo-piceous, the antennae black through- 

 out; head distinctly more than half as wide as the prothorax, the 

 antennae much shorter than the two together, strongly incrassate, the 

 eleventh joint longer than the two preceding combined; prothorax 

 larger and less transverse, about one-half wider than long, the sides 

 subparallel and strongly arcuate, the punctures toward the sides much 

 finer, somewhat sparser and notably less conspicuous than in innocua; 

 elytra well developed, finely, densely and asperately punctate, the 

 suture two-thirds to nearly three- fourths as long as the prothorax; 

 abdomen with sculpture similar to bimaculata, but rather finer and 

 noticeably less dense. Length 3.3-3.8 mm.; width 0.9-1.06 mm. 

 Arizona (Benson), — G. W. Dunn deserticola n. sp. 



