Coleopferological Notices, III. 185 



The single specimen which I have been able to study represents 

 a very distinct and interesting species, especially distinguishable by 

 the coarsely and irregularly tessellated vestiture of pure white and 

 dark brown. 



IJ. densiIS n. sp. — Oblong, suboval, somewhat depressed, black, rather 

 dull in lustre, extremely densely clothed throughout with cinereo-ferruginous 

 squamiform vestiture which is rather persistent. Head and beak rather finely, 

 sparsely punctate, the beak much shorter than the prothorax, densely clothed 

 throughout but a little less densely so along the middle and on the flanks, 

 broadly, feebly convex above but not distinctly carinate. Prothorax nearly 

 as long as wide, very strongly constricted and briefly tubulate at apex ; sides 

 jjarallel and nearly straight, antero-lateral angles obtuse and feebly tubercu- 

 liform ; disk sparsely and coarsely but somewhat feebly punctate, the inter- 

 spaces finely and densely punctato-rugulose ; pubescence moderately dense 

 but abruptly very dense laterally, the dividing line being but slightly oblique 

 and broadly sinuous. Elytra a little less than twice as long as wide, about 

 two and one-half times as long as the prothorax, and, in the middle, from 

 one-third to one-half wider than the latter ; sides broadly, feebly arcuate, 

 obliquely convergent in apical third, the apex feebly produced and subtrun- 

 cate ; humeri narrowly oblique ; disk extremely densely clothed, the vesti- 

 ture not denuded but just visibly less dense along the alternate intervals, 

 the sutural stria broadly, deeply impressed, the strial punctures almost 

 completely obscured by the vestiture. Abdomen and legs extremely densely 

 clothed throughout with ochreous-white, the legs rather short and but slightly 

 robust. Length 10.0-15.0 mm. ; width 3.9-6.0 mm. 



Arizona (Winslow). Mr. Wickham. 



Apparently taken in abundance ; my series is very homogeneous 

 and consists of one small male and four much larger females, the 

 latter with distinctly broader and longer rostrum. This species 

 can easily be identified by its rather depressed form, dense and per- 

 sistent vestiture, unusually sparse and feeble punctuation, and by 

 the broadly impressed sutural stria of the elytra. 



CLKOIVUS Schon. 



This very composite genus includes a large complex of species of 

 varied but generally more or less robust form, and especially with 

 the rostrum thick and broad. It has been subdivided by several 

 authors, notably Chevrolat and Motscbulsky, into a number of 

 groups, nearly all of which are indefinitely limited and therefore 

 incapable of taking rank as valid genera. The subgeneric groups 

 within our boundaries may be defined in general terms as follows : — 

 Annals N. Y. Acad. Sci., VI, Nov. 1891.— 13 



