854 PROCEEDINGS OF THE ACADEMY OP 



lateribus late rotundatis, angulis posticis rotundatis baud distinctis ; elytris 

 thorace paulo latioribus, sat dense pimctatis ; antennis palpis pedibusque 

 ferrugineis. Long. 4 mm. 



Cape San Lucas, Lower California, collected by Mr. Xantus. In the male 

 the bead is but little narrower than the thorax, the antennae are longer than 

 the head and thorax, strongly serrate, with the third joint triangular, not 

 narrower than the fourth or fifth ; in the female the thorax is about one-half 

 wider than the head, the antennae are shorter than the head and thorax, 

 moderately serrate, with the third joint narrow, and the fourth triangular, but 

 not as wide as the fifth. The intermixed erect hairs are of the same color as 

 the pubescence, but much longer. 



14. P. sordid us. Dasytes sordidus Lee, Proc. Acad. Nat. Sc. Phila., vi. 

 169. 



'San Diego, California. The pubescence is as coarse as in the preceding, 

 and the intermixed hairs as long, but the thorax is considerably rounded on 

 the sides, and not narrowed anteriorly ; and the antennae palpi and legs are 

 black. 



15. P. suturalis. Dasytes sut. Lee, Proc. Acad. Nat. Sc. Phila., vi. 169. 

 San Diego, California. The pubescence is cinereous, and fine, more dense 



at the suture, sides and tip of the elytra, which are more finely and densely 

 punctulated than in the allied species ; the thorax is narrowed from the base 

 to the tip, the sides very feebly rounded and slightly serrate, the base broadly 

 rounded, and the hind angles well marked, and somewhat obtuse. The elytra 

 in the male are Dot wider than the thorax at base, and gradually narrowed 

 behind. The third joint of the autennae is scarcely triangular, the fourth is 

 slightly dilated, but not so wide as the fifth. The female only differs from 

 the male by the elytra not being narrowed from the base, and by the anten- 

 nae being a little shorter. 



16. P. quadricollis. Dasytes quadr.~Lec, Proc. Acad. Nat. Sc. Phila., 

 1859, 75. 



Fort Tejon, Cal., Mr. Xiin'us. Easily recognized by the thorax being quad- 

 rate, with the sides scarcely rounded, subsinuate behind, with the posterior 

 angles rectangular, not rounded; the base is broadly rounded, as in the pre- 

 ceding species. 



17 P. tejonicus, elongatus, niger, fenescens, pube longiuscula minus 

 subtili sat dense vestitus, pilis longis nigris erectis intermixes, capite thorace- 

 que parce punctulato, hoc latitudine breviore, subquadrato antrorsum haud 

 angustato, lateribus late rotundatis, basi rotundata, angulis posticis obtusis 

 haud rotundatis ; elytris thorace latioribus, sat dense punctatis, pedibus saepe 

 nigro-piceis. Long. 2-5 4 mm. 



Fort Tejon, California, Mr. Xantus. The pubescence is coarser than in the 

 neighboring species, but less so than in P. s o r d i d u s. It differs from P. 

 quadricollis by the sides of the thorax not being sinuate behind, and 

 from P. conformis, &c, by the more distinct hind angles and less rounded 

 sides. The feet in several of the specimens before me are dark brownish. 



18. P. conformis. Dasytes conf. Lee, Proc. Acad. Nat. Sc, vi. 169. 



San Diego. The pubescence is gray, and not very fine, and in some speci- 

 mens is denser at the suture and sides of the elytra, as in P. suturalis. 

 The sides of the thorax are strongly rounded, and the hind angles indistinct; 

 the elytra are not wider than the thorax and the punctures are finer than in 

 P. aenescens, and about as in quadricollis an^ Tejonicus. 



19. P. squalid us. Dasytes sq. Lee, Proc. Acad. Nat. Sc. Phila., vi. 169. 

 Differs from the types of P. conformis only by the gray pubescence 



being more dense, and the sides of the thorax a little less rounded, and by 

 the smaller size. 



[Dec. 



