CONOTRACHELUS. 363 
intermixed, somewhat fasciculate on the elytra, that of the undcr surface very sparse and white, the 
femora each with two faint white rings, the anterior pair with a short fulvous line at the base. Head 
closely punctate, foveate between the eyes; rostram very stout, curved, not longer than the head and 
prothorax, 5-carinate, the apical portion thickly punctate in the ¢ and a little more sparsely so In 
the 2, the antenne inserted at about one-third from the tip, joint 2 of the funiculus shorter than 1. 
Prothorax slightly broader than long, gradually narrowing and feebly constricted in front, parallel behind, 
strongly bisinuate at the base; densely, rugosely punctate, sharply carinate, and with an oblique depres- 
sion on each side of the disc at about the middle. Elytra rather long, subtriangular, moderately rounded 
at the sides, and deeply sinuate at the base; coarsely seriate-punctate, the interstices rugulose, 3, 5, 7, 
and 9 sharply costate, the ridge on 3 and 5 broadly, abruptly twice interrupted, the median elevation on 
3 very prominent. Mesosternum flattened between the coxe, protuberant and bituberculate in front. 
Ventral segments shining, very sparsely, finely punctate. Femora clavate, each with a sharp triangular 
tooth, and indications of a very minute tooth at some distance from it exteriorly. Intermediate and 
posterior tibixe excavate at the apex within inthe g. Tarsal claws with a long tooth. 
‘Length 5-54, breadth 23-22 millim. (¢.) 
Hab. Mexico, Tapachula in Chiapas (Hoge); British Hoypuras, Rio Hondo 
(Blancaneaux). 
Five specimens, one only being from Mexico. The completely carinate, rugose 
prothorax, with the disc obliquely depressed on each side, the rather elongate, sub- 
triangular elytra, and the form of the tibie in the male, &c., will help to distinguish 
C. brevirostris from C. retentus, Boh., and others. ‘The rostrum is short and 5-carinate 
in both sexes. The ridge on the third elytral interstice is sometimes interrupted beyond 
the middle only. 
39. Conotrachelus flavibasis, sp. n. (Tab. XIX. figg. 2, 2a, ¢.) 
Oblong-ovate, rather broad, somewhat shining, black, the antenn and tarsi obscure ferruginous; the vestiture 
close, fulvous and white intermixed, the elytra with a patch on the shoulder and a short streak at the base 
of each of the third and fifth interstices densely clothed with pale ochreous scales and the third interstice 
with a line of fulvous scales at the apex, the prothorax with a patch of white and ochreous scales at each 
hind angle; the upper surface also clothed with scattered suberect sete, which are rather long and 
conspicuous on the elytra; the femora faintly biannulate with white. Head densely, rugosely punctate, 
shallowly foveate between the eyes; rostrum exceedingly stout, arched, very little longer than the 
prothorax, densely, rugosely punctate and obsoletely tricarinate, squamose, smoother and hare at the tip, 
the antenn stout, inserted at about one-third from the apex, joint 2 of the funiculus shorter than 1, 
Prothorax transverse, abruptly narrowed and constricted in front, the sides thence to the base almost 
parallel, the base feebly bisinuate; very coarsely, rugosely punctate. Elytra slightly constricted below 
the shoulders, and narrowing from about the basal third, coarsely seriate-punctate, the interstices closely 
rugulose, 3, 5, 7, and 9 sharply costate, the ridge on 3 and 5 each broadly and abruptly twice interrupted, 
the second and third elevations on 3 very prominent. Mesosternum flattened between the coxe, feebly 
bituberculate in front. Ventral segments sparsely punctate. Legs stout ; femora clavate, bidentate, the 
two teeth on the anterior pair small and almost equal in size, the outer tooth on the others smaller than 
the inner one; tarsal claws with a rather long tooth. 
Length 64, breadth 3 millim. (<¢.) 
Hab. Mexico, Jalapa (Hége). 
One specimen. This insect approaches C. foveicollis, but it is larger and more 
elongate, the rostrum is more rugose, the vestiture is closer on the elytra, the prothorax 
is very coarsely, confluently punctate, and the short elevations on the third elytral 
3AA 2 
