THKASYGtETJS. 105 



short, transverse, depressed, not produced in front ; above the labrum 

 is a transverse triangular depressed plane ; immediately above the 

 insertion of the antennae are two small obsolete tubercles, while be- 

 tween them is an indistinct linear depression extending towards, but 

 not reaching, the base of the head ; surface punctate, fulvo-rufous. 

 Thorax transverse, considerably constricted in front ; the anterior 

 angles much depressed ; the sides marginate, and near the anterior 

 angles subsinuate ; at the base is a broad transverse medial depression 

 (not extending to the margins) on either side of the centre of the 

 disc ; near to the anterior angles is a small circular depression ; the 

 surface' is glabrous, finely and sparingly punctate, rufous. Scutellum 

 triangular, fusco-rufous. Elytra broad, robust, punctate-striate, of 

 a deep dark-blue colour, glabrous. Antenna; filiform, black, the first 

 joint being suffused with rufo-fuscous. Legs robust, piceous, the 

 femora being suffused with fuscous. 



Brazil. In the collection of M. Chevrolat. 



3. Thrasygceus obscurus. 



T. oblongo-ovatus, robustus, subparallelus, subpubescens, palllde 



Jlaviis ; capite brevi, supra antennarum basin tenue bitubercu- 



lato, gramdato ; thorace transversa, lato, rectangulari, punctato ; 



elytris punctato-striatis, subpubescentibus ; antennis robustis,fili- 



formibus ; pedibus subrobmtis. 



Long. corp. 2| lin., lat. 1| lin. 



Oblong-ovate, robust, subparallel, very finely pubescent, of a pale 

 flavous colour throughout. Head broad, transverse, depressed, slightly 

 produced ; above the labrum is a transverse and triangular plane ; 

 immediately above the base of the antennae are two obscure but 

 somewhat broad tubercles, forming between them and above them 

 a fovea of the shape of the letter T ; the surface below the tubercles 

 pale flavous, above coarsely granulated and fuscous. Thorax broad, 

 transverse, rectangular, rectilinear; the anterior angles depressed 

 and distinct ; the sides submarginate ; the surface finely punctate. 

 Scutellum triangular, impunctate, fulvo-flavous. Elytra somewhat 

 broader than the thorax, subparallel, punctate-striate, clothed 

 throughout with a fine thick pubescence. Antennce tolerably long, 

 robust, filiform ; the first joint long, and broadly dilated at the apex ; 

 the second short, ovate, inserted at the outer margin of the first ; 

 the third longer than the first, pale flavous. Legs tolerably robust, 

 pale flavous throughout. 



Brazil. In the collection of Mr. Baly. 



