CYRTON. 269 



genus Sparnus) it may also be separated by the more elongated form 

 of the posterior femora and tibiae. 



1. Cyrton anisotomoides. (TAB. IX. fig. 5.) 



C. rotundatum, depressum, rufo-flavum, impubescens; capite brevi, 

 impunctato,flavo ; thorace late transverso,punctato ; elytris latis, 

 subcircularibus, depresses, punctato-striatis ; antennis incrassatis : 

 pedibus, femoribus posticis subelongatis ; flavis, femoribus posticis 

 rufo-flavis. 



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



Rotundate, almost circular, depressed, rufo-flavous, impubescent, 

 shining. Head short, not produced in front ; the eyes are large and 

 prominent ; above the mouth is a transverse triangular depression ; 

 between the eyes and above the insertion of the antennae is a cruci- 

 form fovea ; the surface is obsoletely punctate, and in colour flavous. 

 Thorax transverse, much broader than the head, rectangular ; the 

 anterior angles are depressed, the sides are marginate ; the surface is 

 equate, obsoletely punctate, glabrous, and in colour flavous. Scutel- 

 lum large, triangular, impunctate. Elytra broader than the thorax, 

 subcircular, depressed, punctate- striate, shining. Antennae short, ro- 

 bust, incrassated towards the apex (from the fifth to the tenth joints) ; 

 in colour, the first and second joints are flavous, the rest are black. 

 Leys : the anterior slender ; the posterior tolerably robust and elon- 

 gated, the femora reaching as far as the apex of the elytra, and the 

 tibiae being tolerably long and incurved ; the colour is flavous, the 

 posterior femora and inflation of the hinder claw being rufo-flavous. 



From the district of the River Amazon. 



2. Cyrton sanguineum, 



C. ovatum, latum, subspTicericum, punctatum, glabrum, sanguineum ; 

 capite brevi,* inter oculos transverse depresso, et ad medium lon- 

 gitudinaliter foveolato, impunctato ; thorace lato, antice sub- 

 emarginato, lateribus marginatis et sinuatis, ad latera longitudi- 

 naliter depresso; elytris latis, globosis, subtiliter striato-punc- 

 tatis ; antennis incrassatis, art. & longo, et quam 5 to aut 7 mo 

 fere duplo major, art. I-& flavis, 7 mo -W mo fuscis, lljlavo; 

 pedibus anterioribus fulvo-flavis, femoribus posticis dilatatis, ad 

 apicem in dente biproductis, rufis. 



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



Ovate, broad, subspherical, punctate, glabrous, of a somewhat 

 flavo-sanguineous colour throughout. Head small and short, trans- 



