46 Coleopterological Notices, ILL 



fine stria along the middle, the punctures very fine and widely dispersed, but 

 coarse and deep along the basal margin and on the flanks beneath the spine. 

 Elytra oval, from two-thirds to once longer than wide, the sides arcuate but 

 sometimes almost straight and parallel, scarcely wider than the prothorax in 

 the male but distinctly so in the female, very coarsely and sparsely punctate 

 in scarcely more than basal half. Posterior tarsi as in armata in form, but 

 with the second joint densely spongy-pubescent throughout, except along a 

 median line which becomes broad at base, the basal joint sometimes with a 

 small spot of dense yellow spongy-pubescence at each apical angle. Length 

 23.0-29.0 mm. ; width 9.0-11.5 mm. 



Arizona. 



Four specimens from the Levette cabinet. This species differs 

 from gigas in its much shorter and more transverse prothorax and 

 smaller size, and from armata in the much longer and thicker 

 antennal scape, longer thoracic spines and in the more spongy 

 pubescent second joint of the hind tarsi. It should be placed im- 

 mediately after gigas in the catalogue. 



The ashy pubescence of the fourth antennal joint forms a narrow 

 band extending from basal sixth or seventh of the length to about 

 the middle. 



PSENOCERUS Lee. 



The two species contained in my cabinet may be recognized as 

 follows : — 



Elytra each strongly tumid on the disk near the base ; body ferruginous, the 

 elytra each with an oblique subinterrupted fascia at the middle and a 

 broader transverse spot near apical third white, the portion between the 

 two fasciae blackish supernotatus 



Elytra but very feebly tumid near the base ; body piceous-black throughout, 

 the elytra with a transverse interrupted fascia of white. pubescence at 

 apical third tristis 



In both of these species the scutellum is clothed with dense white 

 pubescence. 



P. tristis n. sp. — Form nearly as in supernotatus, feebly shining ; pubes- 

 cence rather sparse and inconspicuous. Head finely but deeply and very 

 densely punctate ; antenme scarcely three-fourths as long as the body, cylin- 

 drical, the third and fourth joints elongate and subequal, joints five to eleven 

 shorter and becoming still shorter near the apex, the joints compactly joined. 

 Prothorax slightly wider than long, strongly constricted near the base ; apex 

 much wider than the base ; sides nearly parallel in apical two-thirds ; disk 

 evenly convex, rather coarsely, deeply, extremely densely punctate. Elytra 



