180 RHYNCHOPHORA. 
DIAPREPES., 
Diaprepes, Schéuherr, Cure. Disp. Meth. p. 116 (1826); Gen. Cure. ii. p. 7, vi. 1, p. 342 (part.). 
The two species from our region referred to Diaprepes (sunk as a synonym of 
Exophthalmus by Lacordaire) agree with Schonherr’s type (Curculio spengleri, Linn., 
from the Antilles) in having conspicuous vibrissee, and the genus also includes other 
W. Indian forms. ‘The supposed new genus briefly characterized (but not named), and 
a type indicated (Exophthalmus sommeri, Rosensch.), by Horn in 1876 (Proc. Am. Phil. 
Soc. xv. p. 100) is synonymous with Diaprepes, the particular species mentioned by 
him having a short angular prominence on each side of the prothorax in front (repre- 
senting the true ocular lobe), much as in Pachneus. In Exophthalmus (type Curculio 
quadrivittatus, Oliv.) the vibrisse are entirely wanting. In both genera the elytra 
have supplementary strie on the outer part of the disc. 
1. Diaprepes albofasciatus, sp.n. (Hzxophthalmodes albofasciatus, Tab. VII. 
figg. 22, 22a, 3; 23, 23a, 2.) 
Oblong, shining, black ; the prothorax with two narrow interrupted vittee on the disc, and the elytra with 
three irregular fasciee, a transverse patch at the base, and various scattered asymmetrically arranged 
spots, densely clothed with white or yellowish-white imbricate scales, the rest of the upper surface 
more sparsely set with minute, brown or whitish scales and very short decumbent sete; the under 
surface and legs with small bluish or white scales. Head and rostrum closely punctate, the head foveate 
between the eyes, the rostrum much longer than the head, sharply carinate down the middle, and sulcate 
on each side in front of the eyes. Prothorax transverse, subconical, rounded at the sides anteriorly, 
more or less distinctly suleate down the middle; very sparsely, irregularly, coarsely punctate, the 
interspaces minutely punctured. LElytra with rows of closely placed coarse punctures, which become 
crowded and confused on the outer part of the disc below the base, the interstices almost flat, the apices 
feebly acuminate, setose, and dehiscent. Tibise without denticles on their inner edge. 
Length 15-17, breadth 54-74 millim. (¢ @.) 
Hab. Honvuras (Mus. Brit.: 3), Belize River (Stanton, in U.S. Nat. Mus.: @ ). 
Two specimens, the male labelled as having been received in 1845. In the latter 
the prothoracic sulcus is sharply defined and the seriate punctures on the disc of the 
elytra are very coarse. ‘The minute whitish scales on the upper surface are easily 
abraded, but when present (as in the female) they give a powdery appearance to 
the spaces between the markings. The deciduous portion of the mandibles is 
flattened and falciform (fig. 23 a). 
2. Diaprepes pulverulentus, sp. n. 
Oblong, black or piceous; densely clothed with cinereous or bluish-white scales (the colour more or less 
modified by an ochreous exudation), which are condensed into two vitte on the disc of the prothorax 
and another along each flank (the intervening spaces appearing sparsely squamose), and a shorter or 
longer stripe at the base of the alternate elytral interstices, those on the disc sometimes wanting; the 
surface also set with short scattered decumbent sete, the seriate elytral punctures each with an oblong 
scale. Head and rostrum densely punctate, the rostrum finely carinate, the inter-ocular fovea small or 
wanting. Prothorax transverse, canaliculate down the middle; impressed with scattered foveiform 
punctures intermixed with a fine interstitial punctuation. Elytra elongate-subtriangular in g, broader 
and widened to the middle in 9, acuminate and mucronate at the tip, flattened on the disc anteriorly, 
the disc sometimes with several scattered shallow irregularly placed fovee ; with rows of rather fine 
