RHINOTJIETUS. 41 



tarsi and base of the anterior tibiae being suffused with fuscous, and 

 the posterior tibiae and tarsi mfo -fulvous. 



After much hesitation, I have satisfied myself that this ought pro- 

 perly to be recognized as specifically distinct from B. cruciatus. At 

 first sight it appears almost absolutely identical ; but the peculiar 

 squamose pubescence on the elytra (which is represented in the 

 other species by complete impubescence), combined with other points 

 of difference, are too peculiar to admit of the one being constituted 

 merely a variety of the other. 



The only example that I have seen of this species is in the cabinet 

 of Mr. Fry, taken by him at Morro Queimado, Brazil. 



6. Rhrnotmetus cyaneus. (Tab. II. fig. 2.) 



R. oblongo-ovatus, latus, robustus, subcylindricus, antice attenuatus, 

 punctato-striatus, nigro-cyaneus ; capite elongato, longitudinali- 

 ter (et ad basin oblique) carinato, nigro ; thorace elongato, antice 

 constricto, subtiliter punctato, nigro, glabro ; elytris latis, robus- 

 tis, ante medium transverse svfodepressis, punctato-striatis ; an- 

 lennis rohtstis, Jiliformibus, nigrisj pedibus nigris. 



Long. corp. 2|-3 lin., lat. l|-lf lin. 



Oblong-ovate, broad, robust, attenuated in front, rounded at the 

 apex, punctate-striate, glabrous, of a dark metallic-blue colour. 

 Head elongated, produced anteriorly : from the angles of the labrum 

 to the base of the antennae are two oblique, acutely-defined carina- 

 tions ; between them a longitudinal keel-like ridge extends upwards 

 to the base of the antennae ; this, between the eyes, is divided into 

 two ridges (suboblique and then transverse), which terminate at the 

 upper and inner margins of the eyes : eyes large, tolerably prominent, 

 situated near the base of the head ; the surface (which is entirely 

 occupied by these ridges) is impubescent and black. Thorax elon- 

 gated (almost quadrate) ; the anterior angles much depressed and con- 

 stricted ; the sides parallel and marginate ; at the base (when \iewed 

 laterally) is an obsolete transverse shallow depression ; the surface 

 (as seen under a high power) is finely and sparingly punctate ; black, 

 glabrous. Scutellum triangular, black. Elytra considerably broader 

 than the thorax, robust, convex ; a slight transverse antemedial de- 

 pression extends obliquely xipwards towards the humeral angles, 

 giving an appearance of prominence to the surface near the scutellum 

 (in some examples this depression is less apparent) ; the surface 

 finely punctate-striate throughout, the interstices being very finely 

 punctured ; the colour is of a deep cyaneous hue, in some examples 

 almost black. Abdomen black, sparingly clotbed throughout with 



