66 J. L. LECONTE, M. D. 



coming less dense behind ; prothorax as wide as long, convex, finely punctured, 

 slightly narrowed behind, sides nearly straight, disc transversely impressed 

 anti feebly channelled; elytra very coarsely and sparsely punctured, eacli 

 with a series of short very deep oblique grooves midway between the suture 

 and side margin, posterior declivity oblique, flat, smooth, strongly margined 

 with an elevated rim, suture also elevated behind; abdomen ferruginous^ 

 densely pubescent; labrum fringed with bright fulvous hair. Length .48 

 inch ; 12 mm. 



One specimen, Texas; Mr. Belfrage. Very distinct by the pe- 

 culiar sculpture of the elytra. The grooves extend about one-fourth 

 the width of the elytra, and are wider than the interspaces between 

 them, and very deep; they are from twelve to fifteen in number; the 

 posterior declivity of the elytra is margined for almost its entire 

 length, while in P. exesiis the margin extends about one half the 

 length of the slope, forming only a semicircle with that of the oppo- 

 site side. 



P. obliqillis. — Black, thinly clothed with long erect yellowish hairs; 

 head large, granulate; prothorax densely punctured, convex, feebly chan- 

 nelled, slightly narrowed behind, sides straight, rounded near the tip; elytra 

 coarsely punctured, posterior declivity strongly margined for two-thirds the 

 length, and suture elevated behind. Length .45 inch; 11. .5 mm. 



One specimen, Texas; Mr. Belfrage. Allied to P. exe^ux^ with the 

 punctures of the elytra less coarse, not arranged in rows and with the 

 margin of the posterior declivity much longer, forming about two- 

 thirds of an ellipse j the punctures also become smaller towards the 

 tip. 



PIIYM4TOI>E.S Muls. 



P. nitidim. — Black, very shining, sparsely punctured, thinly clothed 



with long erect hairs; elytra with two transverse ivory-white slightly elevated 

 fascise; base of elytra, legs and antennae more or less brown; joints 1 — 6 of the 

 latter with flying hairs. Length .24 inch; 6 mm. 



California. The eyes are deeply emarginate, though less so than in 

 P. (hcHssatiis. This species dififers remarkably from all others in our 

 fauna by the highly polished surface and sparse punctuation. 



HYBODERA Lee. 

 II. flebiliiii. — Blackish, finely punctulate and clothed with fine prostrate 

 pubescence with two patches of silvery lustre, one oblique near the base, the 

 other transverse behind the n)iddle; prothorax longer than wide, lateral and 

 dorsal tubercles very feebly developed. Length .25 inch ; 6 mm. 



California. Smaller than H. hiherculata Lee. (New Spec, 191), 

 and more slender, having the general proportions of Gracilia j)i/ff- 



