378 Mr. Kiuby's Ceiitiin/ nf Insects. 



Tliis genus is distinguished from all others of the tribe by the 

 form of its labrum, and of the last joint of the palpi. It should 

 be placed at the end of Latreille's fifth section, between Pana- 

 ganis and Cychriis *. 



cyanipes. 4. P. 



Plate XXI. Fig. 1. 



Long. Corp. lin.7i- 



Habitat in Brasilia. D. Hancock. 



Corpus oblonguni, atrum, glabrum, obscuruni. Caput subcor- 

 datum violascente-nigruni. Cli/peus distinctus, transversus, 

 quadrangulus ; pone clypeum foveolae duae longitudinales. 

 Labrum tenue, hie inde obtusangulum : angulis anum spec- 

 tantibus, disco excavatum. Mandibulce capitis fere longitudine, 

 edentulae, acutae. Labium articulatum, apice subemarginatum 

 biaristatum. Mentum magnum, transversum, emarginatum, 

 basin maxillarum tegens. Palpi maxillares exteriores quinque- 

 articulati : articulis duobus primis brevissimis, tertio elongato 

 subarcuato, quarto brevi obconico, extimo magno compresso 

 elongato-obtriangulari vel ohcuneiformi ; labiates triarticulati : 

 articulo prime brevi fere obconico, secundo elongato filiformi 

 flexuoso, extimo fere ut in maxillaribus sed paulo majori. An- 

 tenna rufae, basi violascentes : articulis longitudine fere sequa- 

 jibus: primis quatuor obconicis, sequentibus oblongis : extimo 

 obtuse. Collum subglobosum. Thorax oblongus vel oblongo- 

 cordatus, quadrangulus, antice latior et emarginatus, postice 

 subrepandus et utrinque sulce impressus: lateribus rotundatis 

 marginatis, dorse canaliculatus. Scutellum minutum, triangu- 

 lare. £/y^rrt percata : porcis septcm obtusiusculis, ante mar- 



' Cuvier, Rigne Animal, iii. 197. 



ginem 



