396 RHYNCHOPHORA. 
finely seriate-punctate, the interstices alutaceous, 3, 5, 7, and 9 costate, the ridge on 3, 5, and 7 much 
interrupted, that on 5 and 7 reduced to a series of scattered prominences. Ventral segments densely, 
rather coarsely punctate. Mesosternum flattened between the coxe, somewhat protuberant in front. 
Femora clavate, finely unidentate. Tarsal claws with a moderately long tooth. 
Length 41, breadth 2 millim. (9? ?) 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
One specimen. An isolated form, with opaque upper surface, relatively narrow, 
oblong elytra, the latter with irregular fulvous markings at the base and a whitish spot 
beneath the shoulders, a short, stout, rugose rostrum, &c. It agrees with C. nodifer 
and C. elongatus in having a white scar-like mark beneath the humeri, but the meso- 
sternum is not conically protuberant as in those species. 
99. Conotrachelus arachnoides, sp.n. (Tab. XX. figg. 7, 7a, 3.) 
Subovate, somewhat shining, piceous, rufo-piceous, or ferruginous, the prothorax beneath and the elytra below 
the base and at the apex usually more or less mottled with black; the vestiture short, fine, and sparse, 
ochreous, intermixed with white (except on the median third of the elytra), that on the dorsal hump of 
the prothorax close and entirely ochreous and that on the apical third of the elytra mostly white and 
fasciculate, the prothorax with a narrow white line at the sides and another extending outwards from 
the median prominence, and the mesothoracic episterna also with a white line, the femora biannulate 
with white. Head densely, finely punctate, slightly depressed between the eyes above; rostrum stout, 
widened towards the middle and narrowing outwards, arcuate, half as long as the body, sulcate laterally 
and 5-carinate, the bare apical portion almost smooth, the antenne in the ¢ inserted at about one-fourth 
and in the 9 at one-third from the apex ; antenne long and slender, joint 2 of the funiculus nearly twice as 
longas1. Prothorax broader than long, abruptly narrowed and constricted before the apex, the sides more 
or less dentate anteriorly and subparallel thence to the base, the latter deeply bisinuate ; sparsely, rather 
coarsely punctate, the disc sharply carinate and abruptly gibbous at the middle and obliquely depressed 
on each side of this anteriorly. Elytra subtriangular, slightly rounded at the sides, the latter with a 
small conical prominence below the base beneath, strongly sinuate at the base, transversely gibbous at 
the middle, and more or less depressed on the disc before this, the humeri dentiform ; punctate-striate, the 
interstices broad, 3, 5, 7, and 9 very sharply costate, the ridge on 3 and 5 narrowly interrupted below 
the base. Mesosternum flattened between the coxa, slightly swollen on each side anteriorly. Ventral 
segments sparsely punctate. Legs elongate; femora clavate, bidentate, the outer tooth small and distant 
from the inner one; tibie and tarsi comparatively slender, tarsal claws with a short tooth. 
Length 42-51, breadth 22-3 millim. (¢ 9.) 
Hab, Nicaracua (Sallé), Chontales (Belt); Panama, Bugaba (Champion). 
Kighteen specimens. A very peculiar species, recognizable by the carinate dorsal 
hump on the prothorax, the subtriangular, gibbous elytra, with very sharply carinate 
alternate interstices, the long legs, bidendate femora, &c.* C. humerosus, Fahr., has 
a similar prominence on the prothorax. 
100. Conotrachelus albifrons, sp.n. (Tab. XX. figg. 8, 8a, 3.) 
Oblong-ovate, shining, black, mottled with obscure ferruginous, the antenne and tarsi ferruginous; the 
vestiture rather sparse, coarse, fulvous or ochreous, intermixed with white, that on the head very dense 
* C. arachnoides would have perhaps been better placed under sect. d’ in the Table, the rostrum being 
dilated towards the middle. 
