40 RHISTOTMETUS. 



four basal joints are rufous, the rest piceous. Legs fuscous, — the 

 base of the anterior femora, as well as the base of the tibiae, being 

 rufous, the posterior tibia; and tarsi pale ferrugincous, and the glo- 

 bular inflation of the posterior claw brightly rufo-fuscous. 



I captured a single specimen of this species at Petropolis (Organ 

 Mountains, Eio Janeiro), in the montb of February 1857. 



5. Rhinotmetus crucifer. 



It. oblongo-ovatus, attenuafus, parallelus, pubescens ; capite antice 

 proclucto, ad apicem carinato, fiavo-pubescenti ; thorace elongato, 

 antice constricto, angulis anterioribus obsoletis, dcpressis, jiavo- 

 pubescenti, nigro ; elytris parallelis, punctato-striatis, holosericeis 

 (nisi maculis duabus ad hmneros, alterisque postmediis ; hce 

 quatuor rotundatce, pilo nigro-fusco obtectce) ; antennis filiformi- 

 bus, fuseis ; pedibus ftdvis, tarsis tibiisque ad basin anterioribus 

 fusco sujfusis, tibiis tarsisque posticis rufo-fulvis. 



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



Oblong-ovate, attenuated, parallel, subcylindrical. Head pro- 

 duced, elongated in front ; below the base of the antennae are two 

 oblique carinations extending to the lateral margins of the labrum ; 

 above the base of the antennae is a minute longitudinal fovea ; eyes 

 large, prominent, situated at some distance from the base of the 

 head ; the surface finely pubescent throughout. Thorax elongate, 

 the sides parallel, and constricted in front ; the anterior angles ob- 

 solete and much depressed ; the sides submarginate ; when viewed 

 under a high power, a medial longitudinal fovea may be faintly traced, 

 extending from the apex to the scutellum ; the surface is finely and 

 thickly flavo -pubescent throughout, and black (not, as in B. eruciatus, 

 sparingly flavo-pubescent and rufous). Scutellum triangular, im- 

 punctate, and fuscous. Elytra parallel, subdepressed, punctate- 

 striate (the punctures being entirely, and the striae almost entirely 

 concealed by a thick pubescence which clothes the surface through- 

 out) ; the markings on this pubescence closely resemble the pattern 

 of R. eruciatus, the antemedial transverse fascia and the sutural 

 band together forming the boundaries of four large ovate spots. 

 There are, however, these points of difference between the two species : 

 in R. crucifer the medial fascia is broader, the pubescence of which 

 it is composed is shorter, more dense, and flavous ; the surface of the 

 elytra is black, and not rufous ; and the surface of the four ovate 

 spots is (not, as in R. eruciatus, glabrous and impubescent, but) 

 clothed throughout with a short and thick squamose pubescence. 

 Antenna 1 robust, filiform, and fuscous throughout. Legs flavous, — the 



