70 CASEY 



sparse, evenly distributed on the elytra, coarse and erect, longer and 

 dense in isolated patches on the under surface; head more densely 

 pubescent, with large irregular smooth rugae, finely, densely punctate 

 along the eyes and in an angulate anterior area; eyes large, prominent, 

 brown in all examples at hand; antennae not quite attaining the base 

 of the prothorax ( $) or longer (c?), the third joint subequal in length 

 to the fourth; prothorax about twice as wide as long, four- fifths wider 

 than the head, strongly narrowed anteriorly, the sides arcuate, the 

 basal angles everted and acute, the scutellar sinus broad and deep; 

 surface somewhat flattened medially toward base, vermicularly eroded 

 and punctate, the low flat smooth areas large, becoming strongly ele- 

 vated laterally; elytra distinctly wider than the prothorax, barely twice 

 as long as wide, the sides moderately converging for three-fifths, thence 

 obHque and but slightly arcuate to the apex; surface subuniform 

 throughout, the striae moderately distinct almost to the sides, the inter- 

 vals much interrupted by subquadrate spots of greater convexity; 

 abdominal segments steel-blue, very coarsely, unevenly and remotely 

 viridi-punctate, finely, densely punctate only near their bases laterally. 

 Length 21. 0-31.0 mm.; width 7.2-12.6 mm. Texas (near El Paso). 



pollens n. sp 



Form narrower and subparallel, similarly convex and with the same col- 

 oration, lustre and sculpture; head and eyes nearly similar, except that 

 the latter are rather more strongly convex and decidedly less widely sep- 

 arated; antennae parallel and strongly compressed, the lower part of 

 joints four to eleven pale in color as usual and with the lower margin 

 rectilinearly truncate except basally, differing very markedly in the 

 sexes, as in Gyascutus, extending well beyond the base of the prothorax 

 ( cJ*) or failing to attain the base by a corresponding amount ( 9 ) ; pro- 

 thorax not so transverse as in pollens but otherwise similar; elytra 

 narrower and more parallel, about twice as long as wide, slightly wider 

 than the prothorax, the sides arcuately converging in apical two-fifths, 

 with sculpture and sparse erect seta^ as in pollens, the under surface 

 nearly similar; anterior tibiie (c?) slightly bent and with a few very 

 minute serrules within apically, the intermediate more strongly ser- 

 rulate apically but almost straight. Length 22.0-26.0 mm.; width 

 8.0-9.7 ^^- Arizona (Tufson), — H. F. Wickham. . . laticornis n. sp. 



The single very small male of pollens in my series has the anterior 

 tibiae evenly bowed but with the inner subapical serrules almost com- 

 pletely obsolete, the intermediate distinctly arcuate, though less 

 strongly, but with the inner subspiniform serrules from behind the 

 middle to the apex much stronger. Laticornis differs from pollens, 

 not only in its narrower form and smaller size on the average, but in 

 its more convex and rather less widely separated eyes, with their 

 inner margins somewhat more strongly converging upward and also 

 in its evidently less transverse prothorax. The apex of the last 



