EUSTYLUS. 291 
6’. Elytral setee shorter and decumbent . . . . . . . | «= striatus, Boh. 
b°. Elytra with the alternate interstices interruptedly costate. 
c’. Third interstice with two very large oblong tubercles; outer 
strie coalescent; humeriless prominent . . . . . . . quadrigibbus, sp. n. 
d’. Third interstice with a single moderately large tubercle below 
the base ; outer striz free; humeri very prominent . . . ruptus, sp. n. 
d*, Rostrum shorter, subquadrate ; humeri prominent. 
c’. Elytra with the alternate interstices more or less raised; outer 
strie coalescent . . . . . ee eee eee eee gr ypsatus, Boh. 
a’. Elytra with the interstices feebly uniformly convex ; outer strive 
free... ee ee ee VEPAPACIS, SP. NL 
b. Wings rudimentary; scutellum smaller; anterior femora unarmed ; 
humeri not prominent ; rostrum subquadrate. 
c', Elytra with the alternate interstices more or less interruptedly 
costate 2... ee ee ee ee ee ee ew. Chiriq“puensis, Sp. n. 
ad’. Elytra with the alternate interstices more or less raised. 
e. Elytral setee broad, squamiform, raised. . . . . . 2.) .) . «subapterus, sp. n. 
jf’. Elytral setae decumbent, narrow, hair-hke . . . . . . . . cinericius, sp. 0. 
1. Kustylus sexguttatus, sp.n. (Tab. XIII. fig. 20, .) 
Elongate, narrow (db), broader (@), piceous; densely clothed above with brown and whitish scales, the 
latter condensed into two vittz on the disc of the prothorax and a stripe down each of the alternate 
elytral interstices, the elytra also each with three subquadrate blackish spots (two on the third, and one 
on the seventh interstice), and sometimes another small spot towards the apex; the scales on the under 
surface and along the flanks of the prothorax and elytra almost wholly whitish; the surface also set with 
minute scattered decumbent hairs. Rostrum longer than broad, widened anteriorly, the short deep 
scrobes converging posteriorly ; eyes very large, separated by about their own width as seen from above ; 
antenne fully one-half the length of the body in ¢, the scape stout and reaching considerably beyond 
the front margin of the prothorax, joint 2 of the funiculus longer than 1. Prothorax slightly broader 
than long, narrowed and feebly constricted anteriorly, flattened down the middle of the disc, the 
punctures covered by the vestiture. Scutellum large. LElytra elongate-subtriangular in ¢, broader 
and gradually widened to the middle in 2, the humeri prominent; punctate-striate, the alternate dorsal 
interstices costate. Anterior femora clavate and sharply dentate. Anterior and intermediate tibiz 
strongly unguiculate in both sexes. 
Length 7-10, breadth 21-33 millim. (¢ @.) 
Hab. Panama (Salvin), Volcan de Chiriqui, David (Champion), Tabernilla, Canal 
Zone (Busck, in U.S. Nat. Mus.), Taboga I. (Champion, Busch). 
Numerous examples, varying in the intensity of the markings, according to the 
predominance of the whitish or of the brown scales, the darker individuals having 
the white line on the fifth elytral interstice obsolete and the blackish spots very 
conspicuous, and the paler specimens the spots almost obsolete. £. sexguttatus may 
be at once separated from the Mexican EL. striatus by the sharply toothed anterior 
femora, apart from its greater size, larger eyes, longer antenne, shorter prothorax, and 
different elytral markings. 
2PP2 
