440 RHYNCHOPHORA. 
towards the apex, joint 2 of the funiculus longer than 1. Prothorax transverse, abruptly narrowed 
and constricted in front, deeply bisinuate at the base; exceedingly coarsely, confluently punctate, the 
oblique intervening ruge prominent on the disc, the latter also sharply carinate to near the base. 
Elytra subcordate, about one-half wider than the prothorax, deeply sinuate in front; seriate-punctate, 
the interstices slightly rugulose, 3, 5, 7, and 9 sharply, uninterruptedly costate, 10 also costate at the 
base. Mesosternum smooth and concave, protuberant on each side anteriorly. Metasternum smooth and 
deeply excavate in the middle in front. Ventral segments sparsely, coarsely punctate. Legs stout, rugose.; 
femora clavate, unidentate ; anterior tibiz sinuous within ; tarsal claws with a rather long tooth. 
Length 43-54, breadth 23-3,1, millim. (¢ 2.) 
_ Hab. Panama, Bugaba, David, Caldera, Volean de Chiriqui (Champion).—ANTILLES, 
Cuba 1. 
Ten specimens. Differs from C. rufifrons in having a dense, white frontal patch, 
the punctuation of the prothorax exceedingly coarse and confluent, the vestiture (which 
in some examples is fiery-red on the prothorax and the base of the elytra) differently 
coloured, and the sutural interstice not costate. The very coarse sculpture of the 
prothorax also separates it from C. planifrons and C. leucocephalus. Central-American 
specimens agree very well with the type communicated by Dr. Sjostedt. 
181. Conotrachelus rufifrons, sp. n. 
Ovate, robust, rather shining, black, the antennze in great part and the tips of the tarsi ferruginous; the 
vestiture sparse, fine, fulvous, closer, fasciculate, and much intermixed with white on the elytra, that on 
the front of the head dense and rusty-red in colour and that on the legs intermixed with white, the femora 
with a whitish ring ; the upper surface and legs also set with short, scattered, rigid seta. Head densely 
punctate, the front transversely depressed, carinate, and feebly binodose; rostrum stout, arcuate, about 
as long as the prothorax, 5-carinate, thickly punctate at the tip, a little smoother in the 9, the antenne 
inserted towards the apex, joints 1 and 2 of the funiculus subequal in length. Prothorax transversely 
subquadrate, abruptly narrowed and constricted in front, deeply bisinuate at the base ; coarsely, rugosely 
punctate, the narrow interspaces here and there raised into oblique or sinuous, prominent rugee, the disc 
sharply carinate anteriorly. Elytra cordate, nearly one-half wider than the prothorax, deeply sinuate in 
front; coarsely seriate-punctate, the interstices feebly seriato-granulate, 3, 5, 7, and 9 uninterruptedly 
carinate, 1 (sutural) also finely costate from a little below the base. Mesosternum smooth and concave, 
protuberant on each side in front. Metasternum hollowed and smooth in the middle anteriorly. Ventral 
segments sparsely, coarsely punctate. Legs stout and rugose; femora clavate, unidentate ; tarsal claws 
with a short tooth. 
Length 34-5, breadth 23-3 millim. (¢ 9.) 
Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
Seven specimens. ‘The very rugose, sharply carinate, transversely subquadrate pro- 
thorax, the rusty-red frontal patch, the white or greyish-white fasciculate vestiture of 
the elytra, the finely costate suture, the short rigid setosity, &c., distinguish C. rufifrons. 
it bears a certain superficial resemblance to C. cwrulescens. 
182. Conotrachelus planifrons, sp. u. 
Qvate, dull, nigro-piceous, the antenne and the tips of the tarsi reddish; the vestiture rather close above and 
very sparse beneath, rusty-red or fulvous, the elytra often slightly mottled with whitish, that on the front 
of the head sometimes partly or wholly whitish, the femora faintly annulate, the anterior pair with a 
- fulyous line along their basal half above ; the upper surface and legs also set with short, scattered, pallid, 
