MR. F. P. PASCOE OjST thk cubculionid^. 4G5 



medium, alter<a apice approxiniata, et ad latera una media obsitis ; 

 corpore infra dense sulplmrco-squamoso. Long. 3 lin. 

 Hab. Cayenne. 



Allied to C. Besclcii, Fhs., but, inter alia, with a finer and not 

 deeply punctured protliorax, the punctate lines on the elytra 

 more delicate and the intervals smooth. The next species differs 

 also in sculpture, and in the manifestly shorter elytra. The three 

 have the sciitclliiin obsolete or nearly obsolete, and the spur on 

 the anterior tibia) much reduced *. 



CllOLUS ^MULUS. C. subcllipticus, castaueus, nitidus, elytiis magis 

 rufescentibus, supra citriuo-])lagiatus ; capite crebrc punctate ; rostro 

 antennisque rufo-castaneis ; funiculi articulo prime tribus sequentibus 

 conjunctim ajquali ; protborace sat vage tenuiter punctate, limbe an- 

 tico utrinque citrino-squamoso ; scutello obsolete ; elytris brevioribus, 

 obcenicis, minus remote seriatim punctatis, punctis majusculis, inter- 

 stitiis in certo situ transversim cerrugatis, cavitatibus plurimis squamis 

 cilrinis repletis eruatis, soil, tribus majoribus ut in prajcedenti, tribus 

 lateralibus et duabus antemediis minoribus; corpore infra citrine- 

 squameso ; pedibus rufo-castaneis . Long. 2f lin. 



Hab. Amazons. 



* Lacordaire considers that the numerous species included by Schonherr in 

 Cholus ought, for the most part, to be excluded, to form several new genera. 

 While, however, it is very far from being homogeneous, I can find no sufficient 

 characters by which the species can be satisfactorily distributed into genera. 

 On the contrary, while there is absolutely nothing to separate Folyderces, it 

 seems to mo almost impossible in some cases to distinguish Archarias from 

 Cholus, the former diffcrontiated, according to Lacordaire, by tbo intcrmcdiato 

 Bcgnicnts of the abdomen being ungulatcd at the sides ; and therefore I Jiavo 

 not adopted either of those genera. Nevertheless, after an examination of most 

 of Schoiiherr's species and a large numbei* of new ones, several of which are here 

 described, I think it will be desirable to limit the genus, somewhat arbitrarily 

 it may be, as nearly as possible to such species as possess the following cliarac- 

 tors:— (1) eyes round or oval, (2) scape barely rcacliing the eye, (o) club of 

 the antennaj distinct, (4) anterior coxae more or less widely apart, (5) anterior 

 tibia; unguiculated as well as mucronate at the apex. As to the ocular lobes, 

 they are certtiinly present in C. alho-cincfus and some others, and bordered with 

 vibrissa, which partly cover the eye, while in other species (jparciis, undulatus, 

 &c.) there is not a trace of them, the eye resting at some distance from the pro- 

 thorax. The femora, too, almost invariably thickened in the middle, are linear 

 in C. cioictus, which is closely allied to C. alho- cinctus, in which they are in the 

 normal state ; but they are always furnished with a well-marked tooth beneath. 

 The mesosternuni, sometimes strongly produced {luticollis, vidicatus, &c.), is ge- 

 nerally simple ; and there are gradations between the two. The outline, whether 

 rhombic or elliptic, or oval, and the serration of the elytra posteriorly are cha- 

 racters, as it seems to me, of only specific value. 



