Goleopterological Notices, VI. 593 



little longer than wide, not greatly prolonged before the eyes, the latter how- 

 ever small, prominent, slightly elongate and at a considerable distance from 

 the base, the neck subparallel behind them ; surface flat, the integument com- 

 pletely concealed, the frontal impressions apical and feeble; labrum and apex 

 of the epistoma pale testaceous, the palpi black; antenute scarcely a third 

 longer than the prothorax, the outer joints larger, the penultimate slightly 

 transverse, the sixth and eighth small. Prothorax one-fourth wider than long, 

 the sides rounded and feebly prominent behind the middle, thence strongly 

 convergent and broadly sinuate to the apical angles which are laterally obtuse, 

 and feebly convergent and straight to the basal angles which are acute and 

 slightly prominent; apex arcuate, much narrower than the base which is 

 broadly and arcuately lobed; disk convex, completely concealed by the vesti- 

 ture except the excavated submarginal line, whicli does not attain the apex or 

 base. Elytra large, two-thirds longer than wide, gradually wider posteriorly, 

 and, at apical third, twice as wide as the prothorax ; apex acutely ogival, the 

 sutural angles slightly obtuse; humeri exposed at base; lateral edges nar- 

 rowly reflexed. Under surface clothed with an extremely dense crust of 

 white decumbent pubescence, the legs rather short but slender. Length 3.25 

 mm.; width 1.5 mm. 



Utah (southwestern). Mr. Weidt. 



Both of the specimens before me seem to be females, the fifth 

 ventral segment being strongly rounded at apex. This species 

 differs from the preceding in its denser coating of pubescence, 

 shorter but broader head and other characters. 



PSEUD. 4LL01VYX n. gen. 



This genus resembles Allon3'x in the structure of the tarsal 

 claws and ungual appendages, but the inner claw is distinctly 

 smaller than the outer and more abruptly bent at apex, and its 

 appendage is larger and thicker and closely adherent to the claw 

 almost throughout its length ; the appendage of the outer claw is 

 small and altogether basal. It differs greatly from Allonyx in 

 the form of the body, and in having the wide flat punctate and 

 horizontal epipleurse gradualh* inflexed upward in plane toward 

 apex. In the structure of the e^'es, antennae and tibi» it agrees 

 in general with Allonyx. I know of but one species at present. 



1. Ps. pluinbeus Lee— Proc. Acad. Nat. Sci., Phila., 1866, p. 359 (Al- 

 lonyx). 



Cuneiform, moderately convex, opaque, the elytra a little less 

 densely so, black ; legs pale rufo-ferruginous throughout ; pubes- 

 cence not ver}- coarse, appressed, white and rather long, some- 

 what deaise on the el^'tra, sparse anteriorlj' ; erect hairs entirely 



