464 WILLIAM G. DIKTZ, M.D. 



than one-half wider than king, ronnded on the sides, constricted at the apex, 

 apieal cusps prominent, acute and not closely approximate, an acute carina ex- 

 tending from the summit of each cusp and couvergiug towards the median line 

 enclose a triangular fovea, dorsal sulcus ill-defined, obsolete near the base, lateral 

 tubercles very acute, a trifle smaller than the anterior cusps, surface evenly punc- 

 tured, punctures nearly concealed by the scales, which are a trifle paler and more 

 crowded on the sides. Elytra two-fifths wider at the base than the prothorax, 

 oval, rounded on the sides, strife not deeply impressed, punctured, each puncture 

 bearing a pale scale, interspaces flattened on the disc, outer ones slightly convex, 

 each from the fifth to the tenth with a row of distinct, small, but acute granules, 

 a few scattered and less distinct granules on the inner iutei-spaces, a spot behind 

 the scutel of white scales ; pygidium moderately large, punctured and scaly. 

 Legs as in the preceding species, not very deusel.v scaly, tarsi rather slender, 

 joints 2-3 rather short, the third not broadly bilobed, the fourth joint longer 

 than the two preceding joints, claws slender, diverging. Length 2.3 mm.; O.OH 

 inch. 



9- Last ventral segment with a small glabrous place. 



Hab.— West PL, Neb. ; Garland, Col. 



Two female specimens in the Nat. Mus. coll. The Colorado speci- 

 mens differs in several re.spects from the Nebraska specimen, which 

 has served as the type for the above description, and with a largei- 

 series of specimens may prove to be distinct. It has the front 

 scarcely concave, the npper margin of the eyes being hardly raised 

 above the uivean of the front ; the vestiture of the upper surface 

 consists of pale and brown scales in nearly equal proportion. 



P. asperulus n. sp. — Oval, dark piceous. legs and antennai rufo-piceous, 

 clothed above with pale brown pubescence, intermixed with pale, elongate scales, 

 undei-side not very densely clothed with moderately large, dirty gray scales 

 Beak a little longer than the head, widened towards the apex, feebly curved, 

 subangulate on the sides, densely punctured, pubescent, scrobes commence about 

 one-fifth from the apex ; antennje inserted two-fifths from the apex, first joint 

 of funide distinctly longer than the second, this equal to the third, outer joints 

 scarcely wider, club ovoid, rather large. Head closely and rather coai-sely punc- 

 tured, pubescent, deeply concave between the eyes, the latter convex, prominent, 

 their upper margin reaching considerably above the front ; prothorax more than 

 one-half wider than long and about one-fourth wider at the base than at the 

 apex, sides broadly rounded, constricted at the apex, base broadly emarginate 

 each side, lateral tubercles rather small, acute, apical cusps a trifle larger and less 

 acute, rather widely separated, dorsjil sulcus obsolete, an indistinct feebly im- 

 pressed, median line, surface densely and somewhat coarsely punctured, sides 

 densely clothed with whitish scales. Elytra oval, a trifle longer than wide, two- 

 fifths and rather suddenly wider at the base than the prothorax, broadly rounded 

 on the sides, striiv distinct and deepl.v impressed, punctured, punctures approxi- 

 mate, interspaces flat, finely rugose, each with a row of very small acute granules, 

 more distinct on the outer interspaces, the white scales form indistinct spots and 

 bands: pygidium somewhat compressed laterally and produced towaril the apex, 

 densely punctured and pubescent, underside of thorax rather coarsely and densely 



