126 RHYNCHOPHORA. 
This fine species, taken in fair numbers at the Volcan de Chiriqui, is closely allied 
to C. squammiger, Chap. The male of the latter species (of which sex I have seen 
four examples) has no trace of a tubercle on the epistoma ; the elytral scales are less 
brilliantly yellow, and are short throughout, not elongate and bristly towards the apex, 
and the abdomen is fringed with short hairs. I cannot separate the females with 
certainty. They exhibit corresponding differences, but in a less degree. 
CERATOLEPIS. 
Ceratolepis, Chapuis, Syn. Scol. p. 52 (Mém. Soc. Liége, 1873, p. 260). 
The genus Ceratolepis was formed to include a species from Brazil; of this insect, 
C. jucunda, Chapuis’s collection contains a single male in very bad condition. His 
generic diagnosis differs in no respect from that of Camptocerus, except that the phrase 
“ Tarsorum articulus 1 duobus sequentibus subequalis” is altered in its application. to 
Ceratolepis by the substitution of “ wqualis” for “ subequalis.” It becomes therefore 
difficult to say in what points Ceratolepis is distinct. Still there is a clear difference 
of facies between C. jucunda and the species of Camptocerus, and I include in this genus . 
one species from Panama and two, probably from Mexico, which have been found in 
tobacco-refuse, all of which have the same general features as the type species. 
These insects agree in possessing the following characters :—Head less strongly 
rostrate than in Camptocerus, less deeply impressed in the male, the margins of the 
impression not contiguous to the ocular border. Funiculus 7-jointed, the joints 
transverse, scarcely wider towards the apex, not much flattened, with delicate cirri not 
longer than the club, and, according to Chapuis, present in the male alone ; club large, 
rounded-securiform, its lower border being strongly rounded, the upper being nearly 
straight and bearing the funicular articulation above the base, its surface without 
distinct sutures, but with an oblique suture visible in balsam-mounted specimens, 
beginning near the base of the lower border and running forwards and upwards to the 
middle line. Sides of the prothorax curved throughout, its punctuation strong, 
especially towards the sides. (In Camptocerus the prothorax is parallel-sided to near 
the apex and then abruptly contracted ; its punctuation is very fine and not stronger 
towards the sides except in C. costatus.) First tarsal joint long, the third bilobed or 
in the smaller species widened and emarginate at its extremity. 
The genus Cnemonyx, Eichh., agrees with Ceratolepis in having a subsolid club, 
without evident sutures; but the single species known has slender elongate tarsi, the 
third joint of which is quite small and not widened laterally. In appearance it is like 
a Carphoborus or other small Hylesinid, and has the lateral border of the prothorax 
less sharply defined, its punctuation subrugose, and the elytra separately convex, sub- 
elevated and crenate at base. 
