24 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
PACHYSCHELUS ELEGANS Waterhouse. 
Pachyschelus elegans WATERHOUSE, Biol. Centr.-Amer. Coleopt., vol. 3, pt. 1, 
1889, p. 152, pl.8. fig. 20. 
This species was described from material collected by Mr. Champion 
on Taboga Island, Panama. It is not represented by any material in 
the National Museum Collection, and is placed in the key from the 
characters given in the original description. 
PACHYSCHELUS ALBOFASCIATUS, new species. 
Male.—Broadly cuneiform, considerably longer than wide, strongly 
narrowed posteriorly, shining, uniformly, piceous, with a strong vio- 
laceous tinge above; surface rather sparsely pubescent, the pubescence 
forming transverse undulating fasciae on the elytra; beneath piceous, 
with a feeble aeneous reflection. 
Head rather strongly convex, longitudinally grooved from occiput 
to epistoma, the groove rather deep on the front and vertex, becoming 
feebly defined on the occiput; surface very sparsely, obsoletely 
punctate, with a few rather long, cinereous hairs scattered over the 
vertex and occiput; intervals densely granulated on the front, be- 
coming smoother posteriorly. Pronotum moderately convex, about 
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 
nearly truncate, acutely emarginate at elytral lobes, and obsoletely 
emarginate in front of scutellum; hind angles acute, projecting beyond 
the humeral angles of the elytra and fitting closely to them; surface 
obsoletely depressed toward the sides, sparsely punctate, and very 
finely, densely granulate at the sides, the punctures large and very 
shallow, becoming obsolete on the disk, very sparsely clothed with 
long, recumbent, cinereous hairs. Scutellum obsoletely punctate, and 
glabrous, with the anterior angles rather broadly rounded. Elytra 
as wide as pronotum at base; humeral angles obtusely rounded; sides 
parallel to near the middle, then abruptly, obliquely attenuate to near 
the tips, which are conjointly broadly rounded, the lateral margin 
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, rather deep depression at the base, and a narrow, 
deeper one between the humerus and lateral margin, extending along 
margin from the humeral angle to near the middle, and becoming 
much broader posteriorly; surface finely and rather densely punctate, 
the punctures becoming much denser toward the humeral regions, 
sparsely, irregularly clothed with rather long, recumbent cinereous 
pubescence, forming designs on each elytron as follows: An irregular 
area behind the scutellum; a transverse fascia at the middle, com- 
