LeConte.] BAKIXI. 



specimen the pubescence is more dense at the third interspae , and on the 

 secjnd to the fifth interspaces for a short dis ance behind tin.' middle. 



7. O. rugicollis, n. sp. 



Oblong oval, brownish-black, above wi;h scattered elongate yellow 

 scales, which on the elytra form an indefinite pa' tern of a transverse band 

 at the base, and another just behind the middle connec:ed by some less 

 densely placed scales. Head convex, nearly smooth, beak as long as the 

 pro'horax, attenuated towards the tip, strongly curved, punctured, frontal 

 constriction deep. Prothorax wider than long, feebly narrow. -d from the 

 base for two-thirds the length, rounded on the sides, slightly constricted 

 near the tip; very deeply and coarsely rugose, leaving narrow eleva'ed 

 folds, much as in Rhyssematus; there are a few scattered yellow hair like 

 scales; base scarcely sinuate. Elytra a little wider at base than th ' protho- 

 rax, gradually narrowed behind, scarcely separately, but almost conjointly 

 rounded at tip; striae deep, interspaces flat, each with a row of small dis- 

 tant punctures. Prosternum very broad between the coxae, coarsely punc- 

 tured, marked in front with two lines converging behind, and enclosing a 

 smooth triangular space. Club of antennae small, oval rounded, pubescent; 

 claws divergent. Length 4.2 mm. ; .17 inch. 



Middle and Southern States. The pygidium is less exposed than usual, 

 but is perpendicular, so that this species cannot be confounded with Cen- 

 trinus, in which it is nearly horizontal, or at most oblique. 



PSEUDOBARIS n. g. 



The species of this genus have the second joint of the funicle no longer 

 than the third, and the club not larger, oval, with the first joint pubescent 

 and sensitive, and constituting less than one-half the mass; the claws are 

 approximate and slightly connate at base. In these respects they agree 

 with Trichobaris, but differ by the front coxae being very widely sepa- 

 rated, and by the absence of dense scaly or hairy vestiture, though there 

 are a few scattered scales on the elytra of each species. The pros:ernum is 

 broadly silicate in front; the limits of the groove are less sharply defined as 

 in Aulobaris. 



Body elongate-oval, punctures of interspaces in rows 2. 



" stouter convex, confused 1. farcta. 



2. Elytral punctures large, shallow 



" " small... 4. 



3. Prothorax with sides slightly oblique 2. nigrina. 



" nearly parallel 3. angusta. 



4. Side pieces of body densely squamose 5. 



" " " not squamose 4. pusilla. 



5. Brown, prothorax with smooth dorsal line 5 albilatus. 



Black, prothorax without dorsal line 6. T-signum. 



1. P. farcta (Lee.), Pr. Ac. Nat. Sc. Phil. 1868, 362, (Baridim). 

 Kansas, Colorado, and Texas. A robust convex species, having the ap- 



PROC. AMEK. PHILOS. SOC. XV. 96. 2L 



