20 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL, 62. 
Type.—Cat. No. 25098, U.S.N.M. 
Described from a single female collected by E. A. Schwarz on 
December 21, 1909. 
PACHYSCHELUS JENNINGSI, new species. 
Male.—Subtrapeziformis, considerably longer than wide, strongly 
narrowed posteriorly, shining, piceous, with a strong violaceous tinge; 
surface moderately pubescent, the pubescence forming irregular trans- 
verse undulating fasciae on the elytra; beneath piceous. 
Head moderately convex, longitudinally grooved from occiput to 
epistoma, the groove deep on the vertex and front, becoming feebly 
defined on the occiput; surface very sparsely, obsoletely punctate, 
and feebly granulated near the epistoma, and sparsely clothed posteri- 
orly with rather long, recumbent cinereous hairs. Pronotum mod- 
erately convex, nearly three and one half times as wide as long at 
middle, much narrower in front than behind, widest at base; sides 
strongly, obliquely arcuate from base to apical angles, which are 
nearly rectangular; anterior margin deeply, arcuately emarginate; 
base nearly truncate, slightly sinuate at the elytral lobes; hind angles 
acute, projecting slightly beyond the humeral angles of the elytra 
and not fitting closely to them; surface sparsely punctate and finely, 
densely granulated along lateral margin, the punctures becoming very 
fine and nearly obsolete on the disk, sparsely and irregularly clothed 
with rather long, recumbent, cinereous hairs. Scutellum smooth and 
glabrous, with the anterior angles acute. Elytra as wide as pronotum 
at base; humeral angles obtusely rounded; sides obliquely attenuate 
to near the tips, which are conjointly rounded, there is also a feeble 
sinuation at apical third, the lateral margin is strongly serrate and, 
when viewed from the side, is nearly straight, except for an abrupt 
sinuation for the posterior femora; each elytron with a broad, shallow 
depression at base extending arcuately backward to the suture, be- 
coming obsolete on the disk, and with a very narrow, deep groove 
between the humerus and lateral margin, extending along margin 
from the humeral angle to a very deep, broad depression behind the 
humerus, there is also a feeble depression along margin at apex; 
surface finely, sparsely punctate, and sparsely clothed with rather 
short, recumbent cinereous pubescence, the white pubescence forming 
an obsolete irregular fascia at middle, and with numerous white 
hairs scattered over basal half, an obsolete undulating fascia at apical 
third, the tips of the undulations connecting posteriorly to a less 
distinct transverse fascia at apical fourth. Abdomen beneath convex, 
sparsely and coarsely punctate, the punctures very shallow and open 
on the one side, sparsely clothed with short, recumbent, cinereous 
hairs; intervals finely and obsoletely reticulate; last segment rather 
broadly rounded with a short, acute tooth at apex, on each side of 
