172 HYDMOSYNE. 



ginato, angiitis anterioribus rotundatis, punctatis, jiavo-stra- 

 mineis ; elytris robustis, latis, tenue punctato-striatis, glabris ; 

 antennis robustis, ad apicem dilatatis, fulvis ; pedibus robustis, 

 jlavo-ferrugineis. 



Long. corp. 4i lin., lat. 2\ lin. 



Oblong-ovate, robust, impubescent, of a pale stramineous colour. 

 Head depressed, not produced in front ; above the labrum is a trans- 

 verse triangular plane depression ; immediately above the base of the 

 antenna? is a short longitudinal fovea, which joins another (extending 

 transversely and somewhat obliquely upwards towards the upper and 

 inner margin of the eyes), these two canaliculations forming together 

 the character of the letter T ; eyes tolerably large, situated at the 

 base of the head ; the surface impunctate, glabrous, black, with a 

 triangular suffused marking of fusco-rufous above the transverse 

 fovea. Thorax transverse, much depressed, in front distinctly emar- 

 ginate; the anterior angles are rounded; the sides broadly mar- 

 ginate ; the surface is finely and sparingly punctate, glabrous, flavo- 

 stramineous. Scutellum large, triangular, impunctate, glabrous, dark 

 piceous. Elytra robust, much broader than the thorax, finely 

 punctate- striate, glabrous, of a stramineous colour throughout. An- 

 tennae robust, subdilated towards the apex ; the first joint long ; the 

 second short, ovate ; the third to the sixth attenuate, of almost equal 

 length, and shorter than the first ; the seventh to the eleventh short, 

 dilated ; the colour fulvous, the extremity of the third and fourth 

 joints being suffused with piceous, and the apex (from the seventh 

 to the eleventh joints) slightly tinged with fuscous. Legs robust, 

 flavo-ferrugineous throughout ; body beneath black, the under part 

 of the thorax and the abdomen being flavous. 



Brazil. In the collection of M. Chevrolat. 



Genus 29. HYDMOSYNE*. 

 Mandibux.e intra ad basin subtiliter dentatw. 



Palpi maxillab.es elongati, ad apicem dilatati, art. ultimo conico, brevi. 

 Palpi labiales robusti, subcylindrici , minuti. 

 Antenna filiformes, robustaz. 



Caput transversum, antice subproductum, subporrectum. 

 Thobax capite latior, transversus, ad apicem constrictus. 

 Elytra subparallela, tliorace leviter ampliora. 



Pedes : tibiis posticis a retro longitudinaliter excavatis, rectis, et ad 

 ipsum apicem (pone tarsorum insertionem)ungulis duabus armatis. 



* ISuoavvt}, scientia, agilitas. 



