I'HYSIMERUS. 



globular inflation, which entirely conceals from above the apical 

 claw ; this claw is of the same form as the anterior. 



The only sexual distinction that I can trace in this group is the 

 slightly elongated antenna? of the males : this is discernible especially 

 in the third joint, which is rather longer than (instead of being 

 equal in length to) the first. 



1. Physimerus impressus. 



P. oblongo-ovalis, subdepressus, niger, nitidus ; capite brevi, leviter 

 producto, ad basin tricanaliculato, granulate, rufo-ferrugineo ; 

 thorace transverso, rectangulari, ad latera marginato, a posteriori 

 transverse depresso, punctato, rufo-ferrugineo ; elytris sat latis, 

 leviter striato-punctatis, ante medium transverse, et ad humeros 

 oblique fossulatis, nigris, nitidis ; antennis Jiliformibus (sub- 

 incrassatis), art. 1 et 2 fuseis, 3-5 Jlavis, 6-8 nigris, 9 et 10 

 jlavis ultimoque nigro ; pedibus anterioribus fuseis, fulvo-geni- 

 culatis, posticis femoribus nigris pubescentibus, tibiis tarsisque 

 ferrugineis. 

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



Oblong-oval, slightly depressed, somewhat robust, black, shining. 

 Head transverse, slightly produced ; at the base (at a sensible di- 

 stance above the base of the antennae) three slightly raised ridges 

 form together the figure of a trident — the outer ones being pro- 

 duced obliquely to the inner superior margin of the eyes, the medial 

 being continued to the basal margin ; these elevated ridges are 

 lsevigate, the rest of the surface being granulated ; the colour is ferru- 

 gineous, at the apex fulvous. Thorax transverse (almost quadrate) 

 and rectilinear; the sides marginate; at the base are two slight 

 postmedial transverse depressions ; punctate, ferrugineous. Scutellum 

 triangular, fuscous. Elytra robust, broader than the thorax, with 

 faint punctuation arranged irregrdarly as strice (this punctuation is 

 obsolete at the apex); a deep antemedial depression extends ob- 

 liquely upwards towards the base (reaching it at the sixth line of 

 punctuation), and gives an appearance of prominence to the humeral 

 and also the scutellary angles; black, shining. Antennce filiform, 

 robust, slightly incrassated towards the apex ; the first and second 

 joints are fuscous, third to fifth flavous, sixth to eighth black, 

 ninth and tenth flavous, the apical joint black. Legs : the anterior 

 femora black ; the tibiae fuscous, with their superior surface clouded 

 with black ; the tarsi fuscous : of the postical, the femora are black, 

 the tibiae and tarsi ferrugineous. 



Taken at Petropolis (Organ Mountains, Rio de Janeiro) by Mr. 

 Frv, and in that gentleman's cabinet. 



