RHINOTMEXUS. 39 



apex extending from the shoulders nearly to the medial elytra, and 

 the postmedial pair extending nearly to the apex) ; these spots are 

 well-defined and subcircular ; the rufous surface which separates 

 them is clothed throughout with thick fulvous pubescence. Antenna; 

 robust, filiform, fuscous, the basal joints being suffused with rufous. 

 Legs sparingly pubescent, fuscous ; the base of the anterior femora 

 being flavous, and the posterior tibiae and tarsi being rufous suffused 

 with piceous. 



A single example of this species was taken by Mr. Gray and my- 

 self near Petropolis (Organ Mountains, Rio Janeiro), February 1857. 



4. Rhinotmetus spectabilis. (Tab. II. fig. 1.) 



R. oblongo-ovatus, parallelus, subdepressus, jlavo-pubescens, punc- 

 tato-striatus, niger ; capite producto, ad apicem longitudinaliter 

 carinato, ad basin antennarum bitubercidato, jlavo-pubescenti, 

 granulato, inter oexdos nigro, ad basin rufo-fusco ; thorace elon- 

 gato, antice constricto, ad angidos basales depresso, sparsim 

 Jlavo-pubescenti, nigro, ad basin rufo-fusco; elytris subcylin- 

 dricis, punctato-striatis, flavo-pubescentibus, nigris ; antennis 

 robustis,jiliformibus,piceis,ad basin rtifis ; pedibus fuscis, tibiis 

 tarsisque posticis pallide ferrugineis. 



Long. corp. 3 lin., lat. 1 lin. 



Oblong-ovate, parallel, robust, subdepressed, fusco-pubescent, 

 punctate-striate, black. Head produced, elongated in front ; from 

 the labrum a deep longitudinal carination extends upwards to the 

 base of the antennae, on either side of which are two others obliquely 

 transverse : immediately above the base of the antennas are two short 

 longitudinal tubercular elevations (more distinctly apparent by a 

 deep medial fovea between them) ; between these and the basal line 

 is an obsolete medial carination : the surface is finely flavo-pubes- 

 cent and granulated ; above the insertion of the antennae black, at 

 the base of the head rufo-fuscous ; eyes large, prominent, globose, 

 situated at some distance from the posterior margin. Thorax pro- 

 duced (almost quadrate) ; the anterior angles are very much de- 

 pressed and obsolete ; the sides parallel, marginate, and constricted 

 in front ; near the basal angles is a broad and shallow depression ; 

 the surface is finely and sparingly flavo-pubescent, more distinctly 

 so at the base and sides ; black, the posterior margin being rufo- 

 fuscous. Scutellum small, triangular, fuscous. Elytra parallel, 

 robust, subcylindrical, punctate-striate (the punctures being quite 

 obliterated, and the striae partially concealed by a thick golden- 

 flavous pubescence) ; the surface beneath this pile is black. Abdo- 

 men somewhat pubescent and black. Antennai robust, filiform ; the 



