26 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
vex, three times as wide as long at the middle, much narrower in 
front than behind, widest at base; sides strongly obliquely arcuate 
from base to apical angles, the edge strongly margined, and apical 
angles rectangular; anterior margin broadly, arcuately emarginate; 
base transversely truncate to elytral lobes, where it is acutely emar- 
ginate, more obsoletely emarginate in front of scutellum; hind angles 
acute, projecting considerably beyond the humeral angles of the 
elytra but not fitting very closely to them; surface sparsely punctate, 
and narrowly, densely granulate along the sides, the punctures large 
and very shallow, becoming obsolete on disk, and with a few very 
short, cinereous hairs. Scutellum smooth and glabrous, with the 
anterior angles rather acute. Elytra as wide as pronotum at base; 
humeral angles obtusely rounded; sides parallel to basal third, then 
abruptly, obliquely attenuate to near the tips, which are conjointly 
rounded, the lateral margin strongly serrate, and, when viewed from 
the side, is nearly straight, except for a feeble sinuation for the pos- 
terior femora; each elytron with an obsolete basal impression, and a 
very narrow one extending along the lateral margin from near the 
humeral angle to a broad, very deep impression behind the humerus; 
surface sparsely and rather coarsely punctate, and sparsely, irregu- 
larly clothed with rather long, recumbent, cinereous, and blackish 
hairs, the cinereous pubescence forming on each elytron a narrow 
transverse fascia at the middle, and a narrow, somewhat undulating 
one at the apical third. Abdomen beneath strongly convex, very 
sparsely and obsoletely punctate, with a few moderately long, recum- 
bent, cinereous hairs; intervals finely and densely reticulate; last 
segment broadly rounded, with a long tooth at apex, which is paral- 
lel and extending slightly beyond the tips of the elytra, the portion 
in front of the marginal groove acutely rounded, with a sharp tooth 
at the tip. Elytral epipleura narrow. Metasternum more coarsely 
punctured than abdomen, and broadly, arcuately emarginate in front. 
Prosternum sparsely pubescent, and feebly, arcuately emarginate 
anteriorly; prosternal process three times as wide as the coxal cavi- 
ties, sides distinctly expanded behind the coxae, and very broadly 
rounded at apex; episternum short, flat, and triangular. Prothoracic 
epipleura wide and nearly flat, with a deep, very narrow groove 
behind the antennal groove; lateral margin rectangular, becoming 
more acute posteriorly; antennal groove deep and rather wide, follow- 
ing the suture between the episternum and epipleura, extending into 
the latter to about the middle, and parallel to the lateral margin. 
Length, 2.7 mm.; width, 1.65 mm. 
Type locality——Paraiso, Canal Zone, Panama. 
Type and paratype.—Cat. No. 25102, U.S.N.M. 
Described from two male specimens. The type was collected by 
I. A. Schwarz, March 18, 1911. A paratype, which differs very 
