280 H. C. FALL. 



the middle, with one or two serrules each side the median notch ; surface finely 

 and rather sparsely granulose at base, more coarsely so anteriorly, especially 

 toward the middle; median line feebly finely impressed in anterior half, termi- 

 nating at the basal margin in a feeble smooth prominence. Elytra a little more 

 than twice as long as the prothorax and very slightly less than twice as long as 

 wide ; finely scabrous and dull, the punctures rather coarse and distinct through- 

 out, separated on the average by about twice their own diameters, rarely with 

 trace of serial arrangement, except near the side margin. Beneath more shining 

 than above, punctures finer and denser, but varying in size; last ventral with 

 subapical transverse ridge, which is less acute than in the female, but plainly 

 obvious from a posterior view point. 



Female. — Larger and usually paler than the male, the color varying from pale 

 castaneous to piceous; eyes smaller and less convex, antenna? strongly serrate ; 

 asperities at the anterior portions of the thoracic disk more pronounced than in 

 the male; the sculpture otherwise feebler, the surface throughout less dull, the. 

 prothorax posteriorly distinctly shining; median lobe of the apical margin of the 

 prothorax sinuate each side, and more narrowly rounded, with several teeth each 

 side the middle; subapical ventral carina strong. Length 2.8-4.8 mm. 



Northern States from New England to Dakota. The following- 

 localities are represented in the material at hand : Massachusetts, 

 New York, "Canada," Ontario (Ridgeway), Pennsylvania, West 

 Virginia, Ohio, Michigan, Wisconsin, Iowa, Dakota. 



2. P. basalis Lee— Male. Dark brown or piceous, the elytra often much 

 paler, legs and antennae pale; pubescence yellowish, longer and denser than in 

 ruficornis, quite conspicuous on the elytra. Head nearly as in ruficornis, antennae 

 (fig. 31) with much shorter rami, that of the third joint being subequal to the 

 length of the joint itself, the ramus of the fourth joint three or four times the 

 length of the joint. Prothorax opaque, somewhat transverse, sides convergent 

 and but slightly arcuate from basal fourth, apex broadly rounded, the apical lobe 

 ill defined, its reflexed margin with a narrow feeble median sinuation and 

 scarcely at all serrulate; surface granulato-rugose, with larger asperities ante- 

 riorly; median line not impressed, a minute smooth prominence at the basal 

 margin. Elytra scarcely wider than the prothorax, three-fourths longer than 

 wide, finely scabrous, dull or very feebly shining, punctures irregularly disposed 

 and nearly uniform in size throughout. Last ventral with distinct transverse 

 subapical ridge. 



Female. — Larger and rather more robust, color nearly uniform, varying from 

 castaneous to piceous; sculpture finer and surface more shining ; margin of pro- 

 thorax slightly sinuate each side of the apical lobe, which is thus better defined, 

 its margin distinctly serrulate each side of the deeper median notch ; last ven- 

 tral with acute transverse subapical carina. Length 3-5.5 mm. 



California, San Diego to Mendocino. 



In specimens from northern California the antennal rami are 

 somewhat longer than in those from the south, but they are so 

 closely in accord in other respects that I have not considered them 

 distinct; there is also some variation in the coarseness of the elytral 



