853 PROCEEDINGS OF THE ACADEMY OP 



4. L. diffi cilia. Dasytes cliff. Lee, Pr. Acad. Nat. Sc. Phila., vi. 170. 

 San Jose, California. This species is narrower than L. Motschulskii 



or in t err u p t u s, and of the same form as the preceding, from which it 

 differs by the hand behind the middle of the elytra being broad and scarcely 

 angulated. The sixth ventral segment is visible in both sexes, but in the 

 male the fifth is marked with a deep rounded medial fovea. 



5. L. rotundicollis. Dasytes rot. Lee, Pr. Acad. Nat. Sc. Phila., vi. 1 70. 

 San Jose, California. Differs from all the preceding by the pubescence 



being much shorter and less unequally distributed, so that the spots on 

 the elytra become obsolete. The thorax is scarcely wider than long, narrowed 

 in front, moderately rounded and serrate on the sides, broadly rounded at the 

 base; the elytra are slightly wider than the thorax, and somewhat more 

 coarsely punctured than in the foregoing species. The sixth ventral segment 

 is visible in both sexes, but in the male the fifth segment is excavated nearly 

 to the base, and the excavation is fringed with black velvety hairs, and the 

 sixth segment is depressed in the middle. 



6. L. lute i pes. Drtsytes lut. Lee, Pr. Acad. Nat. Sc. Phila., vi. 170. 

 Southern portion of California ; San Diego, Fort Tejon. The feet and 



antennae are ferruginous, the outer joints of the former are fuscous. The 

 thorax is as long as its width, moderately rounded at the sides, which are 

 serrate as usual ; the elytra are a little wider than the thorax, strongly punc- 

 tured, with the spots near the base smaller, and the transverse bands wider 

 than in the other species ; the pubescence is long and coarse. I observe no 

 sexual character in the four specimens in my collection. 



7. L. obscurellus. Dasytes obsc. Lee, Proc. Ac. Nat. Sc. Phila., vi. 170. 

 One specimen, San Diego ; a strongly punctured species, very short hoary 



pubescence ; the thorax is rounded, convex and finely serrate at the sides ; 

 the elytra are wider than the thorax and more convex than usual. The des- 

 cription of L. punctatus Motsch., 1. cit. 390, agrees with my specimen, 

 except that the antennae and feet are entirely black ; while in the description 

 cited the second and fourth joints of the antennas, the tip of the tibiae, and the 

 tarsi are stated to be " plus minusve testaceo-piceis." 



8. L. senilis. Dasytes se?iilis Lee, Proc. Acad. Nat. Sc. Phila., vi. 170. 

 Kansas, New Mexico, Texas. The sixth ventral segment is visible in both 



sexes ; the fifth in the male is feebly truncate, with a narrow fringe of velvety 

 black hair behind at the middle. 



DOLICHOSOMA Stephens. 



1 refer to this genus two species in which one claw is furnished with a 

 connate appendage as long as itself, and free only at the tips, and the other 

 with a short appendage, rounded at tip, leaving the outer half of the claw 

 free. The second species shows a character not observed in any Pristoscfdis 

 or Listrus ; the thorax each side about half way between the middle and the 

 lateral margin is marked with a distinct longitudinal line. 



1. D. f o v ei c oil i 8. Dasytes foveieollis Kirby, Fauna Bor. Am. iv. 243. 



Nebraska, near the Rocky Mountains, and northwards. A slender, dark 

 blue species of large size, having the third joint of the antennae triangular, 

 and nearly as large as the fourth, which is equal to the fifth. The pubescence 

 is very fine, cinereous and sparse, intermixed with erect black hairs. The 

 sixth ventral segment is prominent in both sexes ; the fifth is broadly emargi- 

 nate at tip, and excavated in the male, the excavation being bounded by an 

 elevated ridge each side. 



2 D. nigricornis. Pristoscelis nigr. Bland, Pr. Ent. Soe Phila. 

 Kansas and Nebraska, Mr. Ulke. A small species of blackish bronze color, 



[Dec. 



