132 PLETTROCHRONA. 



Thorax transversus, latus, rectangularis, glaber. 



Elytra parallela, lata, robusta, plerumque punctato-striata, et Icete 



colorata, glabra. 

 Pedes: tibiis postltis brevibus, simplicibus, ad apicem, a posteriori, 



marginatis et subsinuatis. 



Labrum short, subcircular in outline. 

 Mandibles robust, simple. 



Maxillary palpi (Tab. V. fig. 3 m) elongate, filiform, not dilated ; 

 the second joint is short, transversely truncate at the apex ; the 

 third elongate, slightly incurved, the length being three times the 

 breadth ; the ultimate joint is minute and conical. 



Labial palpi (Tab. V. fig. 3 n) perceptibly broader than the maxil- 

 lary, acuminated. 



Antenna} approximate, situated below and between the inner mar- 

 gins of the eyes, robust, short, inerassated at the apex ; the basal 

 joint broad and elongate; the second narrower, short, ovate; the 

 third to the fifth narrow at their base, dilated towards the apex, 

 narrower and longer than the second; the sixth to the eleventh 

 slightly broader, shorter, transverse at the apex and rounded at the 

 base. 



Eyes lateral, situated at the base of the head, subglobose. 

 Head short, transverse, depressed at right angles to the plane of 

 the elytra, narrower than the thorax, not produced in front, generally 

 obliquely or transversely depressed between the eyes ; impubescent, 

 glabrous. 



Thorax transverse, rectangular, rectilinear, the anterior angles 

 depressed, the sides depressed and marginate ; equate ; impunctate, 

 glabrous. 



Scutelhm large, triangular, impunctate. 



Elytra broader than the thorax, short, robust, subdepressed, the 

 sides somewhat dilated medially; generally punctate-striate, gla- 

 brous. 



Legs : anterior femora robust, slightly dilated towards the middle. 

 The tibios are short, incurved abruptly at the immediate base, gra- 

 dually and slightly thickened towards the apex. The tarsi are short 

 and broad ; the basal and second joints being of subequal length ; 

 the third broader and slightly bilobed, the margin being fringed with 

 a rigid and thick pubescence ; the terminal joint is narrow and 

 slightly incurved, and dilated towards the extremity : the claw is 

 bifid and simple. The posterior femora are short, inerassated, and 

 rounded at their upper margin. The tibios (Tab. V. fig. 3 g) are 

 short, not incurved, gradually but slightly thickened towards the 

 apex ; the posterior outline above the insertion of the tarsus is sub- 



