290 RHYNCHOPHORA. 
Hab. Guatematat (Scherzer, in Mus. Brit.) ; Costa Rica, Piedras Negras (U.S. Nat. 
Mus.) ; Panama, Chiriqui (Zrétsch). 
Three specimens, varying in the number of the spots on the prothorax and elytra, 
the individual from Chiriqui having the prothorax almost immaculate. The third 
elytral interstice becomes more prominent and cariniform posteriorly, but it is not 
tuberculate at the commencement of the apical declivity as in C. cretaceus (F.) and 
some other allied S..American forms. The seriate punctures are closely placed, fine, 
and shallow, and the sutural region is flattened. The minute scattered hair-like scales 
are just traceable. C. quadrisignatus and C. bisignatus, Boh., are somewhat similarly 
maculate. 
EUSTYLUS. 
Eustylus, Schonherr, Gen. Cure. vii. 1, p. 40 (1843) ; Lacordaire, Gen. Col. vi. p. 207. 
Schénherr referred two winged species to this genus—one with the anterior femora 
toothed (£. puber, Oliv., from Cclombia*), the other with the anterior femora unarmed 
(H. striatus, Boh., from Mexico). Amongst the various new forms now added there 
are representatives of each of these sections, and three with rudimentary wings. 
They agree in the following characters :— 
Rostrum widened anteriorly, the scrobes short, deep, superior, and wholly exposed from above, the bare nasal 
plate more or less concave, and limited behind by a v- or u-shaped ridge; antennal scape stout or 
moderately stout, reaching at least to the front of the prothorax; eyes prominent, not strictly lateral ; 
prothorax subcylindrical; scutellum well developed orsmall; elytra 10-striate, the outer strix coalescent 
from the basal third or free (H. ruptus and H. verepacis), the humeri prominent in the winged forms ; 
metathoracic episterna dilated anteriorly ; anterior femora toothed or unarmed; anterior and inter- 
mediate tibiz unguiculate ; tarsal claws free; wings fully developed or Tadimentary ; body oblong or 
elongate, squamose, and sometimes conspicuously setose, 
E. grypsatus superficially resembles a Phyllobius, from which it differs in having 
sharply defined, deep, oblong scrobes and free tarsal claws. The fusion or separation 
of the outer striz of the elytra and the development of the wings prove to be unstable 
characters in Lustylus. 
a. Wings fully developed; scutellum larger. 
a’. Anterior femora toothed; rostrum longer than broad; head not 
abruptly convex behind the eyes. 
a’. Klytra with the interstices feebly uniformly convex: scales uni- 
formly green. . . . «2... .. ewe : . [puder, Oliv.] 
6°. Elytra with the alternate interstices raised, spotted and lineate . 
scales not metallic . . . . 
b. Anterior femora unarmed ; head. abruptly convex behind the eyes. 
. Rostrum longer than broad. 
Vg Elytra with the alternate interstices raised. 
a‘, Elytral sete erect, long, and stiff . 
Sexguitatus, sp. n. 
setipennis, sp. n. 
* There is a specimen of this species in the Pascoe collection labelled “ Pluty yomus, Mexico,” but the 
locality requires confirmation. 
