Gol^opterological Notices, VII. 639 



P. clialytoeus n. sp. — Subparallel, strongly convex, glabrous, black, the 

 legs and abdomen piceous, the elytra with a dark steel-blue lustre; integuments 

 but slightly alutaceous. Head scarcely % as wide as the prothorax, trans- 

 verse, sparsely but distinctly punctured, the eyes moderate; front broadly con-^ 

 cave; mandibles small, arcuate, setose internally, with a large quadrate tooth 

 within at base, the apex almost equally trilobed, the upper lobe most acute. 

 Antennie moderate, the club 4-iointed, twice as long as the funicle; joints two 

 to five of the latter gradually and slightly increasing in width, the latter % 

 as wide as the first joint of the club, which is three times as vnde as long and 

 scarcely % ^s long and % as wide as the second; last three joints much more 

 densely pubescent, subequal in width, nearly as in oregonensis. Prothorax % 

 wider than long, widest and subangularly rounded at the sides at basal thirdy 

 the sides thence convergent and sinuate to the basal angles, which are right^ 

 only slightly blunt, prominent and slightly everted; sides less convergent and 

 nearly straight in apical % ; apex broadly and bisinuately emarginate, the 

 apical angles slightly prominent anteriorly; disk feebly impressed along the 

 middle, sparsely, somewhat unevenly and not very strongly punctate. Scutel- 

 lum punctured slightly at base. Elytra }4 longer than wide, nearly three 

 times as long as the prothorax and perceptibly wider; intra-humeral impress- 

 ion small but distinct; punctures disposed nearly as in oregonensis. Legs mod- 

 erate in length, rather slender, the hind tarsi but little shorter than the tibiae. 

 Length $ 8.3-9.5, 9 10.3 mm.; width $ 2.8-3.5, 9 4.1 mm, 



California. 



This species greatly resembles oregonensis, but differs in its 

 much smaller size, smaller head, prothorax and mandibles of the 

 male, rather stronger and sparser punctures, and especiallj^ in the 

 prominent basal angles of the prothorax, these being broadly ob- 

 tuse and obliterated in oregonensis. The description is from the 

 larger of the two males before me, the female having the head 

 relatively smaller, the prothorax narrower but less transverse 

 and more narrowed toward tip, the body stouter and the hind 

 tarsi scarce!}^ f as long as the tibiae. 



P. marginalis n. sp. — Oblong, parallel, moderately convex, glabrous, the 

 punctures of the head with very short hairs, the mandibles setose within and 

 the side-margins of the prothorax bristling with rather numerous erect setse; 

 body and legs black, the tarsi and antennae dark piceo-ruf ous ; integuments 

 moderately shining, the elytra feebly alutaceous. Head moderately large, % 

 as wide as the prothorax, strongly transverse, strongly and closely punctured, 

 the mandibles short and stout, with the apex within broadly truncate, the 

 truncature nearly straight, only feebly oblique and beset with about five small 

 denticles, of Avhich the superior is slightly larger and more acute, the inner 

 basal tooth well developed and feebly bifid at tip. Antennse moderate, the 

 <3lub unusually developed, fully twice as long as the stem, broad, composed of 

 four joints, the first only slightly shorter in a transverse sense than the others 



