1878. | D938 [Horn. 
“Check List,’’ p. 127, I ventured the suggestion which I now feel must 
be more positively stated. 
Occurs in California and Oregon. 
P. punctatus Lec. ~. New Species 102 ; pubescens Lec. Q, loc. cit. 
Piceous brown, moderately shining, surface sparsely clothed with un- 
equal, erect, yellowish hairs. Elytra regularly convex at the declivity, 
the latter without marginal ridge. Length .402-.48°7 inch; 10-12 mm. 
Male. Wead a little larger and with the mandibles a little more promi- 
nent. Thorax sub-granulate at the sides, punctured at middle. Elytra 
finely and rather sparsely punctate. 
Female. Head and mandibles smaller than the male. Thorax granu- 
late over the entire surface but not densely. Elytra more distinctly punc- 
tate. 
The differences here are parallel with thgse noticed in the preceding 
species. 
Occurs in the Peninsula of Lower California. 
P. exesus Lec. Proc. Acad., 1858, p. 74. 
Piceous, moderately shining, sparsely clothed with erect, yellowish 
pubescence. Head densely granulate, vertex with a smooth line at mid- 
dle. Thorax moderately densely granulate. Elytra convex at the de- 
clivity, the latter margined around the apex, the two ridges and apical 
margin limiting a semicircular space ; surface with very coarse and deep 
punctures which are very dense at the sides and posteriorly, at apex the 
punctures become obsolete and are replaced by granules. Length .56 inch; 
14mm. 
The specimen before me is a female apparently, but has the sutural angle 
of the elytra slightly dentiform. This species differs from the next by its 
deeper and rougher sculpture and by the marginal ridge of the declivity 
short. 
Occurs in the Peninsula of Lower California. 
P. obliquus Lec. Trans. Am. Ent. Soc., 1874, p. 66. 
Dark brown, feebly shining, sparsely pubescent. Head granulate. 
Thorax granulate at the sides, moderately, coarsely punctured on the 
middle of the disc. Elytra moderately, densely muricately punctured, de- 
clivity oblique, slightly flattened, sparsely granulate, much smoother at tip, 
and with a limiting ridge, the two sides and apex enclosing three-fourths 
ofa cirele. Length .48 inch; 12 mm. 
I have two specimens before me, both females probably, which differ 
from the preceding species by their less rough sculpture, and the declivity 
flatter and more nearly surrounded by the acute margin. 
Occurs in Texas. 
P. plicatus Lec. loc. cit. p. 65. \ 
Brownish, shining, very sparsely hairy. Head finely granulate. Thorax 
sparsely punctate. Elytra with a few coarse punctures sparsely placed near 
the base, and along the suture, sides slightly flattened, and with transverse 
PROC. AMER. PHILOS. soc. xyit. 101. 8Q. PRINTED JUNE 1, 1878. 
