28 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
turning obliquely downward to the suture; there is also an obsolete 
transverse fascia at the apex. Abdomen beneath moderately convex, 
sparsely and obsoletely punctate, clothed with a few inconspicuous 
recumbent, cinereous hairs; intervals finely and densely reticulate; 
last segment broadly rounded, with a feeble tooth at apex, the por- 
tion in front of marginal groove acutely rounded, with a sharp tooth 
at the tip. Elytral epipleura narrow. Metasternum more coarsely 
punctured than abdomen, and nearly truncate in front. Proster- 
num feebly, arcuately emarginate in front; prosternal process about 
three times as wide as the coxal cavities, sides nearly parallel, and 
broadly rounded at apex; episternum short, flat, and triangular. 
Prothoracic epipleura wide and nearly flat, with a deep, narrow 
groove behind the antennal groove; lateral margin rectangular, be- 
coming more acute posteriorly; antennal groove deep and rather 
wide, following the suture between the episternum and epipleura, 
and extending into the latter to about the middle, and parallel to 
the lateral margin. 
Female.—Differs from the male in having the last abdominal seg- 
ment strongly, narrowly produced, and very broadly, arcuately, but 
not deeply emarginate at apex, with four very short subequal teeth 
arranged obliquely on each side of the emargination; ventral surface 
with a large, round, and rather deep depression at the apex. 
Length, 2.4 mm.; width, 1.5 mm. 
Type locality.— Paraiso, Canal Zone, Panama. 
Type and allotype.—Cat. No. 25103, U.S.N.M. 
Described from two specimens, male and female, collected a 
E. A. Schwarz at the type locality. The male was collected April 6, 
1911, and the female May 7, 1911. 
PACHYSCHELUS UNIFASCIATUS, new species. 
Male.—Broadly cuneiform, considerably longer than wide, strongly 
narrowed posteriorly, shining, uniformly bottle-green above ; elytra 
with a narrow transverse pubescent fascia at apical third ; beneath 
piceous. 
Head strongly convex, with a short, longitudinal depression on 
the front; surface shining, with a few very shallow punctures inter- 
mixed with finer obsolete ones. Pronotum moderately convex, 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 rectangular; anterior margin 
rather deeply, arcuately emarginate; base nearly truncate, feebly 
sinuate at the elytral lobes, hind angles acute, projecting slightly 
beyond the humeral angles of the elytra and fitting closely to them; 
surface broadly, obsoletely depressed at the posterior angles, glabrous, 
