416 RHYNCHOPHORA. 
whitish annulus, the anterior pair with a narrow fulvous line at the base above. Head rugulosely 
punctate, transversely depressed in front ; rostrum very stout, widened towards the middle, arcuate, not 
longer than the head and prothorax, 5-carinate, thickly punctate at the tip, smoother towards the apex 
in the 9, the antenne inserted near the tip, joint 2 of the funiculus shorter than 1. Prothorax trans- 
verse, rounded at the sides anteriorly, narrowed and feebly constricted in front, deeply bisinuate at the 
base; coarsely, confluently punctate, and sharply carinate anteriorly. Elytra narrowing from a little 
below the base, sinuate in front; coarsely seriate-punctate, the interstices finely rugulose, 3, 5, 7, and 9 
sharply costate, the ridge on 3 and 9 coalescent at the apex, that on 3 shortly and abruptly interrupted 
below the base and sinuate posteriorly (in one specimen also depressed beyond the middle). Mesosternum 
flattened between the cox, slightly hollowed in the centre in front. Ventral segments sparsely 
punctate. Femora clavate, each with a sharp triangular tooth, that on the anterior pair almost obsolete 
in the ¢, and sometimes with a minute prominence at some distance exterior to it. Posterior tibie of 
the ¢ sinuate within, and also hollowed and ciliate at the apex, the apex strongly unguiculate. Tarsal 
claws with a short tooth. 
Length 41-51, breadth 2;1,-23 millim. (¢ 2.) 
Hab. Guatemata, San Juan and Panima in Vera Paz (Champion: 2); Panama, 
David, Caldera (Champion: 3 @ ). 
The above description is mainly taken from a pair from Chiriqui. This species is 
very like C. sinuaticollis, but it has the rostrum shorter and stouter, and rounded 
at the sides when viewed from above; the prothorax rounded at the sides and 
more coarsely punctate; the elytral coste less interrupted, the one nearest the 
suture strongly sinuate posteriorly. C. dilatirostris, which also has a mesially 
dilated rostrum, has the dorsal coste of the elytra much more prominent and more 
interrupted. 
136. Conotrachelus segregatus, sp. n. 
Very like C. sinuatocostatus, but with the rostrum stouter, and similarly widened towards the middle; the 
prothorax less coarsely punctate, not carinate; the elytra with the ridge nearest the suture more broadly 
interrupted below the base and strongly sinuate posteriorly ; the femora each with a triangular tooth 
and a minute prominence a little exterior to it; posterior tibie feebly sinuate within in both sexes. 
Length 53-52, breadth 24-3 millim. 
Hab. Nicaraeua, Chontales (Janson). 
Two specimens. If I have correctly identified the sexes of this insect (the supposed 
male having the rostrum more closely punctate at the apex), O. segregatus cannot be a 
form of C. sinuatocostatus, the latter having the posterior tibie peculiarly formed in 
the male. 
137. Conotrachelus latirostris, sp. n. (Tab. XX. fig. 31, rostrum, from 
in front.) 
Oblong, robust, shining, black, the antenne and the tips of the tarsi obscure ferruginous; the vestiture 
rather coarse, fulvous and whitish intermixed, very sparse on the disc of the prothorax and on the under 
surface, and closer elsewhere, becoming subfasciculate on the elytra, that on the prothorax condensed 
into two small spots on each side of the disc and another at each hind angle, the femora with 
a whitish ring. Head densely, rugosely punctate; rostrum exceedingly stout, not longer than the 
prothorax, flattened at the base above, widened from a little beyond the middle to the apex, sculptured 
