356 Mr. F. P. Pascoe on new Genera 



punctato ; antennis nigro-clialybeatis ; prothorace modice trans- 

 verso, irregulariter punctato, pone medium rude biimpresso ; scu- 

 tello nigro, triangular! ; elytris manifeste costulatis, interstitiis 

 subbiseriatim fortiter punctatis ; corpore infra laevigato, nitide 

 nigro ; femoribus anticis infra subbidentatis. Long. 8 lin. 



Hah. West Africa (Gold Coast). 



These two species and 0. speciosus* differ from the type 

 {0. cupreus^ Fab.) in their shorter claw-joint, the prothorax 

 not denticulate at the sides, and greater breadth of the pro- 

 thorax. 



Cyeiogeton. 



(Amarjgmin£e.) 



Ab Amarygmo differt : Lohi antennarii dilatati ; femora fusiformia ; 

 tarsi subtus dense pilosi. 



The antennary lobes (or orbits) not being in the form of 

 ears, this genus should, technically, be placed among the 

 Platygenous subfamilies of Lacordaire's second cohort of 

 Tenebrionidag ; it is, however, too nearly related to Amaryg- 

 mus to be separated from it more than generically. Of the 

 two other characters, there are some species of the latter genus 

 in which the femora are scarcely linear, or in which the tarsi 

 are scarcely ciliated, the cilia becoming hair-like and more 

 numerous. Amarygmus ceneus^ Cast. (Hist. Nat. Ins. ii. 

 p. 234), is said to have the tarsi pubescent beneath; it may 

 belong to Em-ypera, to which also A. convexus may be re- 

 ferred. In the fine species described below the clypeus bulges 

 out, forming a transverse fold, which is continuous on each 

 side with the antennary orbits. 



Cyriogeton insignis. 



C. subellipticus, nitidissime cupreus ; capite infra oculos exeavato ; 

 clypeo prominulo plicam transversam formante ; antennis nigris ; 

 prothorace lateribus postice parallelis, supra fere impunctato ; scu- 

 tello triangulari ; elytris modice convexis, sat obovatis, tenuiter 

 seriatim punctulatis, interstitiis latis, fere impunctatis ; corpore 



* This is an unpublished name ; in Dejean's Catalogue it stands as 

 Pezodontus speciosus ; the following description will serve to distinguish 

 it: — 



Odontopus speciosus. 

 O. oblongus, modice convexus, nitide cyaneus, aliquando violaceus ; ely- 

 tris vel viridibus, vel cupreis, tenuiter costulatis, interstitiis crebre for- 

 titer pimctatis ; corpore infra violaceo ; prostemo latissimo ; femoribus 

 infra unidentatis. Long. 10-12 lin. 

 Ifab. Guinea. 



