150 PERIBLEPXUS. 



Thorax transversus, ad basin leviter constrictus, lateribus marginatis, 



subsinuatis, sparsim punetatus. 

 Elytra lata, robusta, parallela, ante medium transverse depressa, 



punctato-striata. 



Pedes robusti ; tibiis posticis brevibus, inarmatis, ungidis apicalibus 

 dente robusto ab infra armatis. 



Labrum short, circular or subsinuate in outline. 



Maxillary palpi (Tab. VI. fig. 3 to) subelongatc, dilated at the 

 apex ; the second joint is longer than the first, and gradually incras- 

 sated ; the penultimate is considerably broader (as well as longer) 

 than the second ; the last joint is short, narrower, and more or less 



flattened. 



Labial palpi attenuate, more or less cylindrical. 



Antennce situated between (and somewhat below) the eyes, filiform, 

 attenuate, in the males at least twice the length of the body ; the 

 first joint is elongate, slightly thickened towards the apex, and in- 

 flected outwards; the second is shorter and more attenuate; the 

 third distinctly longer than the first ; the fourth and fifth subequal ; 

 in the males these three last-named joints are relatively as long as in 

 the genus Loxoprosopus ; the remaining joints are filiform and sub- 

 cylindrical. 



Eyes circular, globose, lateral, situate at (or close to) the base of 



the head. 



Head short, transverse, depressed, and at the insertion of the an- 

 tennae (when viewed laterally) vertical or almost reflected backwards, 

 not produced in front ; at the insertion of the antennae, the angle 

 which is formed by the reflection of the head is sharp and well- 

 defined, not rounded, thus closely resembling the preceding genus, 

 Loxoprosopus ; the surface is more or less punctate. 



Thorax transverse, rectangular ; the anterior angles subacute and 

 depressed ; the sides marginate and subsinuate, with a tendency to 

 an angle near the middle ; at the base slightly constricted ; the sur- 

 face, in the example before me, is coarsely and sparingly punctate 

 and glabrous. 



Scutellum large, triangular, impunctate, situated in the plane of 

 the elytra. 



Elytra broad, parallel, robust, broader and more robust than in 

 Loxoprosopus, and distinguished moreover from that genus by a 

 broad antemedial transverse depression, which extends obliquely 

 upwards to the shoulders, and gives a prominence to the scutellary 

 angles; the surface in the example before me is deeply punctate- 

 striate, the stria? being obsolete near the suture and at the apex. 



Leys robust. The anterior femora cylindrical, and slightly dilated 



