CONOTRACHELUS. 395 
arcuately narrowing from about the middle, the humeri more or less dentiform, obliquely truncated in 
front, the inflexed sides with a small conical prominence below the base; coarsely seriate-punctate, the 
punctures not very closely placed, the interstices dull, 3, 5, 7, and 9 very sharply costate, the ridge on 3 
twice, and that on 5 and 7 thrice, broadly and abruptly interrupted, the median elevation on 3 large 
and lamelliform. Mesosternum flattened between the coxe, bituberculate in front. Ventral segments 
sparsely, coarsely punctate. Legs stout; femora clavate, acutely unidentate ; tarsal claws with a very 
short tooth. 
Length 34-41, breadth 2-2} millim. (d @.) 
Hab. British Honpuras, Belize, Rio Hondo (Blancaneauz). 
Five examples. A small species approaching C. anaglypticus, the prothorax shorter 
.and wanting the white lines at the sides, the elytra with the coste more prominent 
and more interrupted, the median elevation on the third interstice large and lamellitorm, 
the humeri dentiform, the legs stouter, the femora simply unidentate, the mesosternum 
hollowed in the middle in front. C. defricatus, Kirsch, from Peru, is an allied form, 
97. Conotrachelus canaliculatus, sp. n. 
Ovate, robust, dull, black or piceous, the elytra more or less mottled with ferruginous, the tarsi and antenna, 
and in one specimen the rostrum, femora, and tibie also, similarly coloured; the vestiture close, fine, 
brownish, the prothorax in one specimen with a curved whitish line on each side of the disc, the two 
lines bifurcating posteriorly and continued on to the humeri and the base of the third elytral interstice, 
the femora biannulate. Head, rostrum, antenne, and prothorax much as in C. umbrosus, the rostrum 
not carinate in the ¢, and smoother towards the apex inthe 2. Elytra comparatively short, constricted 
below the humeri, the latter not prominent ; seriate-punctate, the interstices dull, 3, 5, 7, and 9 sharply 
costate, the ridge on 3 twice, and that on 5 (and sometimes that on 7 also) thrice, broadly and abruptly 
interrupted, the median elevation on 3 large and lamelliform. Mesosternum flat between the coxe, 
slightly hollowed in the middle in front. Ventral segments sparsely, coarsely punctate. Femora 
unidentate. Tarsal claws with a very short tooth. 
Length 22-3, breadth 12-1? millim. (¢ @.) 
Hab. Mexico, Cordova (Lge). 
Two specimens, one reddish in colour (apparently immature) and with definite 
markings on the prothorax. A small, short form of C. wmbrosus, with the elytral 
humeri obtuse (instead of dentiform), the rostrum smoother in the female, the meso- 
sternum less hollowed in the middle in front. 
98. Conotrachelus opacus, sp. n. (Tab. XX. figg. 6, 6a.) 
Oblong, opaque, black, the tarsi and antenne obscure ferruginous; somewhat thickly clothed with very 
minute, narrow, brownish scales, these becoming long and piliform on the prothorax, the latter with a 
short, faint, curved streak on each side of the disc behind, the elytra with some condensed irregular 
fulvous markings at the base, which become whitish in front, and a dense rounded-triangular whitish 
patch beneath each shoulder, the elytra and legs also with short, scattered, decumbent, setiform scales, 
the femora obsoletely annulate. Head densely, rugulosely punctate ; rostrum very stout, short, scarcely 
longer than the prothorax, abruptly curved and slightly widened just before the tip, rugulosely punctate 
and feebly carinate, the apex shining and thickly punctured, the antenne inserted near the tip, joints 5-7 
of the funiculus transverse, 2 slightly shorter than 1. Prothorax transverse, feebly bisinuate at the sides, 
narrowed in front, moderately sinuate at the base ; densely, finely punctate, the dise slightly hollowed 
down the centre anteriorly and obsoletely binodose before the middle. Elytra oblong, one-half wider 
than the prothorax, subparallel in their basal half, the humeri somewhat obliquely truncated in front; 
3 EE 2 
