426 RHYNCHOPHORA. 
in front, strongly bisinuate at the base; densely, rather coarsely punctate, and sharply carinate. Elytra 
subcordate, about one-half wider than the prothorax, deeply sinuate at the base; punctate-striate, the 
interstices finely rugulose, 8, 5, 7, and 9 uninterruptedly costate. Intermediate coxe rather widely 
separated, the mesosternum depressed between them, the sides of the latter not thickened in front. 
Ventral segments closely punctate. Legs very stout, short, rugose; femora strongly clavate, feebly 
unidentate, the tooth on the anterior pair almost obsolete; anterior tibie almost straight on their inner 
edge ; tarsal claws with a short tooth. 
Length 5, breadth 23 millim. (.) 
Hab. Panama, David (Champion). 
One specimen. Very like C. brevisetis, but smaller, the rostrum (¢) long and 
slender, the prothorax more rounded at the sides, the legs shorter and stouter, the 
mesosternum depressed between the cox and not in the least thickened at the sides 
anteriorly, the ventral segments closely punctate. The form of the rostrum, meso- 
sternum, &c., also separates it from C. squamifrons and others. 
158. Conotrachelus ovalis, sp. n. 
Broad-ovate, robust, moderately shining, black, the antennee in part and the tip of the rostrum reddish, the 
legs slightly mottled with the same colour; the vestiture rather coarse, ferruginous, sparse on the 
prothorax, rostrum, and under surface, and closer elsewhere, subfasciculate on the elytra, that on the legs 
slightly intermixed with white, the femora conspicuously annulate ; the upper surface and legs also set 
with short, fine, semierect sete. Head rugulosely punctate, transversely depressed in front, shortly 
carinate; rostrum rather slender, feebly curved, not longer than the head and prothorax, sharply 
5-carinate, thickly punctate at the tip, the antennee inserted at about one-fourth from the apex, joints 1 
and 2 of the funiculus subequal in length. Prothorax transverse, somewhat rounded and crenulate at 
the sides, narrowed and feebly constricted in front, deeply bisinuate at the base; densely, rugulosely 
punctate, and sharply carinate, the narrow interspaces towards the sides here and there raised into short 
prominent ruge. Elytra about one-half wider than the prothorax, comparatively short, subcordate, 
sinuate at the base; punctate-striate, the interstices finely rugulose and obsoletely granulate, 3, 5, 7, 
and 9 uninterruptedly costate. Mesosternum depressed between the coxe. Ventral segments closely 
punctate. Legs short and stout; femora clavate, unidentate; anterior tibie sinuate within ; tarsal claws 
with a short tooth. 
Length 4%, breadth 23 millim. (<¢.) 
Hab. GuateMALA, Teleman in the Polochic Valley (Champion). 
One specimen. Less elongate and relatively broader than C. nodifrons, the rostrum 
(3) much shorter and sharply 5-carinate, the prothorax less rounded at the sides and 
nodulose on the outer part of the disc, the legs not so stout, the vestiture a little 
coarser and longer. The mesosternum is similarly formed in both species. 
154. Conotrachelus alternans, sp. n. 
Subovate, dull, nigro-piceous; the vestiture fine, rather close above and very sparse beneath, fulvous or 
ferruginous, condensed into a transverse patch on the front of the head and somewhat fasciculate on the 
elytra, the femora annulate, the anterior pair with a fulvous line at the base above, the upper surface 
and legs also with short, fine, scattered seta. Head densely, rugulosely punctate, transversely depressed 
and obsoletely binodose above the eyes ; rostrum moderately stout, arcuate, a littie longer than the head 
and prothorax, 5-carinate, thickly punctate at the tip in the ¢, and sparsely so in the Q, the antennw 
inserted towards the apex, joints 1 and 2 of the funiculus equal inlength. Prothorax transverse, abruptly 
narrowed and constricted in front, and also a little narrowed behind, the base deeply bisinuate ; densely, 
