284 CASEY 



sumably congeneric with tcstaccus^ the original type, but of this 



1 cannot be wholly sure at present. 



Cnemodus Horn. 

 As stated above I assume that all of the three species described 

 below are congeneric, though, if the figure of /^5/^c^z/s published 

 by Dr. Horn is even approximately correct, it differs widely from 

 the two new ones here made known : — 



Elytra shining but densely, aciculately punctured. Yellowish-testa- 

 ceous; head obtuse, as long as broad, moderately coarsely punc- 

 tured between and in front of the eyes ; prothorax wider than 

 long, convex, the sides broadly rounded, feebly emarginate ante- 

 riorly, the angles obtuse, truncate posteriorly, the angles distinct ; 

 disk nearly smooth, moderately shining, more coarsely punctured 

 toward the lateral margins; marginal line scarcely distinct, the 

 pronotum almost continuous with the flank; elytra elongate, sub- 

 parallel, twice as long as the head and prothorax, the humeral 

 angles distinct, obtuse; under surface faintly and sparsely punc- 

 tured and sparsely clothed with yellowish hairs. Length S.o mm. ; 

 width 2.75 mm. California (in the vicinity of Fort Yuma). 



testaceus Horn 



Elytra polished, feebly rugulose, indistinctly, sparsely and muricately 

 punctate laterally; body more slender : 2 



2 — Form very elongate, parallel, convex, polished, glabrous, with a 



few short erect hairs laterally, pale and uniform brownish-yellow 

 throughout ; head oval, wider than long, distinctly narrowed 

 behind the very large prominent eyes, the vertex with a short 

 longitudinal impressed line at the middle, evenly but not closely, 

 rather coarsely and muricately punctate, the occiput impunctate ; 

 antennae fully half as long as the body, the joints subequal in 

 length ; prothorax one-half wider than long, widest just before 

 the middle, where the sides are rather strongly, evenly rounded, 

 thence converging and less arcuate to the basal angles, which are 

 not at all blunt and minutely prominent, less converging but 

 rounded anteriorly to the obtuse apical angles, the apex broadly 

 sinuato-truncate, much wider than the base, the latter coarsely 

 beaded and rectilinearly truncate ; surface very convex, polished 

 and perfectly smooth, becoming slightly alutaceous and with some 

 sparse shallow punctures near the sides ; elytra about twice as 

 long as the head and prothorax and a fifth wider than the latter, 

 with feebly impressed longitudinal lines toward the suture; under 

 surface feebly punctate, the propleuras and abdomen nearly 

 smooth. Length 6.3 mm.; width 2.1 mm. Arizona (Mesa). 



angustus n. sp. 



Form nearly similar but much smaller, pale brownish-yellow the 

 elytra subhyaline and straw-yellow ; head small, slightly trans- 



