6 TIIOS. L. CASEY. 



straight. Elytra at base as wide as the prouotum ; sides parallel and very 

 feebly convex ; together broadly and abruptly rounded behind, scarcely one- 

 half as long again as wide ; disk convex, highly polished, striae strong, 

 punctured, interspaces strongly convex. Last ventral segment bearing but 

 one seta on each side near the immediate vertex. Mesosternum very broad 

 between the coxae, wliere it is emarginate behind, emargination as wide as 

 the lateral lobes, ver^' deep, broadly rounded at the bottom. Under surface 

 of anterior tarsi having two series of long, cinereous, extremely dense pubes- 

 cence. The gula is very convex longitudinally. Length 6.5 mm. % . 



Atlantic City, New Jersey ; one specimen. 



The type is greatly damaged about the head, the oral organs being 

 entirely wanting; there is enough remaining, however, to show that 

 the species is evidently distinct ; it bears a somewhat remote resem- 

 blance to A. ruhrica, but in that species the pronotum is distinctly 

 punctate at the base. The very dense pubescence on the under sur- 

 face of the anterior tarsi reminds us in a manner of Anisodactylus, 

 although in that genus there is not a medial division or gap. 



ANISODACTYLUS. 



A. arizoiiae n. sp. — Form nearly as in cali/ornicus. Upper surface deep 

 blue-black, under surface dark fuscous, femora black, tibiae very slightly 

 paler, tarsi fuscous. Head large, slightly longer than width across the eyes ; 

 eyes small, rather feebly convex ; labrum not twice as wide as long, feebly 

 and narrowly sinuate anteriorly, angles broadly rounded ; antennae equal 

 in length to width of prothorax, robust, dark castaueous ; emargination of 

 mentum parabolic, tooth in the form of a short, wide, and acute cusp, dental 

 setae very closely approximate ; mandibles long, strongly arcuate at tip, 

 acute, piceous-black. Prothorax distinctly longer than the head, one-third 

 wider than long ; disk moderately and evenly convex, highly polished 

 throughout without any trace of punctuation ; median line almost oblite- 

 rated, lateral impressions somewhat stronger ; sides feebly convergent 

 behind, strongly arcuate anteriorly, feebly sinuate posteriorly ; anterior 

 angles narrowly rounded, posterior acute and very slightly produced ; sur- 

 face having a deep, purplish-blue reflection. Scutellum small and acutely 

 triangular. Elytra at base very slightly wider than the prothorax, two and 

 two-thirds times as long as the latter ; sides nearly parallel and rather feebly 

 arcuate ; disk moderately convex, widest at mid-section, striae impressed 

 and distinct, interspaces very feebly convex and highly polished. Second 

 and third joints of the anterior tarsi much broader than the first : first, 

 second, and tliird joints of the posterior tarsi decreasing uniformly and 

 rather rapidly in length, first not as long as the next two together. Length 

 13.5 mm. 



Arizona ; one specimen, male. 



This very fine species is one of the largest of the genua within our 

 territory; it somewhat resembles caUfornicus in form, but differs from 



