398 RHYNCHOPHORA. 
similarly formed in the two sexes. In C. cordatus the elytra have a conspicuous short 
white streak on the third interstice at about one-third from the apex. 
102. Conotrachelus gibbirostris, sp.n. (Tab. XX. figg. 10, 10a.) 
Ovate, shining, black, sometimes with the prothorax and a subapical fascia on the elytra reddish, the antenne 
fusco-ferruginous ; the vestiture very fine, widely scattered, greyish, becoming condensed into a common, 
curved, subapical fascia on the elytra, that of the prothorax longer, closer, and ochreous in colour, the 
elytra also with an ochreous patch on each side of the scutellum, the anterior femora with a conspicuous 
fulvous streak at the base above. Head closely punctate; rostrum exceedingly stout, laterally compressed, 
not longer than the head and prothorax, abruptly arcuate, separated from the head by a transverse 
groove, rugosely punctate and 5-carinate, the antenne inserted towards the tip, short, joint 2 of the 
funiculus much shorter than 1, 5-7 transverse. Prothorax transverse, abruptly narrowed and strongly 
constricted in front, deeply bisinuate at the base ; closely punctate, the disc shallowly sulcate and finely 
carinate anteriorly, and with a V-shaped prominence at the middle, followed on each side by a deep 
oblique sulcus. Elytra subtriangular, twice as wide as the prothorax, broadly and arcuately dilated at 
the sides below the rounded humeri and rapidly narrowing thence to the apex, the base very deeply 
sinuate ; serlato-foveolate, the interstices narrow, here and there transversely confluent, 3, 5, 7 , and 9 
strongly costate, the ridge on 3 and 5 twice, and that on 7 once, abruptly interrupted, the elevations on 
3 and 5 very prominent. Intermediate coxe widely separated, the mesosternum flattened between them 
and somewhat prominent in front. Ventral segments very sparsely, finely punctate. Femora clavate, 
unidentate. Tarsal claws with a short tooth. 
Length 33-4, breadth 2-24 millim. (¢ 9.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Numerous examples. ‘This insect approaches C. cordatus, but differs from it in 
having the elytra strongly dilated at the sides below the shoulders, the rostrum still 
stouter, more compressed, and gibbous above, the vestiture much sparser and otherwise 
coloured, &c. There is an allied species from Brazil in the British Museum, but it has 
a more convex scutellum, &c. 
103. Conotrachelus excavatus, sp. n. 
Subovate, shining, black, the antenne and tarsi ferruginous; the vestiture fine, sparse, greyish, becoming 
fulvous at the base of the elytra, and on the prothorax, head, and rostrum, the femora faintly biannulate, 
the anterior pair with a fulvous line at the base above. Head densely punctate, flattened between the 
narrowly separated eyes ; rostrum exceedingly stout, about as long as the head and prothorax, strongly 
arcuate, somewhat gibbous at the base, rugulosely punctate and feebly 5-carinate, thickly punctate at 
the tip, the antenn inserted near the apex, joints 4-7 of the funiculus transverse, 2 shorter than 1, 
Prothorax transverse, narrowed and constricted in front, deeply bisinuate at the base ; densely, rugulosely 
punctate, except along the interrupted smooth median line, the disc with a V-shaped prominence at the 
middle and obliquely sulcate on each side behind this. Elytra subtriangular, gradually widening to 
about one-fifth from the base and rapidly narrowing thence to the apex, deeply bisinuate in front, the 
humeri obliquely truncated ; coarsely and deeply seriate-punctate, the interstices narrow and rugulose, 
3, 5, 7, and 9 strongly and sharply costate, the ridge on 3 and 5 twice, and that on 7 once, abruptly 
interrupted, the median elevation on 3 large and lamelliform. Mesosternum flat between the coxe, 
protuberant and binodose in front. Ventral segments sparsely, finely punctate. Femora clavate, 
bidentate, the outer tooth minute and distant from the other. Tarsal claws with a short tooth. 
Length 3, breadth 12 millim. (<.) 
Hab. Guatenata, Panzos in the Polochic Valley (Champion). 
