152 LOXOPROSOPUS. 



Elytra rather broader than the thorax, parallel, subcylindrical, faintly 

 but regularly punctate-striate, clothed throughout with short dense 

 fuscous pubescence ; black ; sides evenly bounded with fuscous, more 

 broadly behind the shoulders, and not reaching the apex. Antennce 

 filiform, very long (in the males between two and three times the 

 length of the body), subpubescent, fuscous, with the base of each 

 joint flavous. Legs tolerably robust, flavous throughout. 



Guerin-Meneville (Icon. Regne Animal, Cuv.), in his description of 

 this species, speaks, with reference to the thorax, of " pres des angles 

 anterieurs une fossette ronde an milieu en avant, et une large fossette 

 transversale, un peu arquee pres du bord posterieur." In the two 

 examples which I have had the opportunity of examining, there is 

 very little trace of such depressions : it is evident that in this respect 

 the species is subject to some variation, for we cannot assume the 

 thoracic sculpturing to be sexual, inasmuch as his specimen (as the 

 examples before me) was clearly a male. 



Rio Janeiro and the neighbourhood. A single example of this 

 fine species in the collections of M. Chevrolat, Mr. Fry, Mr. Miers, 

 and Hcit Dohrn. 



2. Loxoprosopus marginatus. (Tab. VI. fig. 2.) 



L. oblongo-ovatus, subcylindricus, niger, subtiliier pubescens ; capite 

 brevi, transverso, antice Icevigato, testaceo, triangulari macula 

 fusca notato, superne granulato, transverse foveolato, fulvo-ferru- 

 gineo, inter oculos fusco ; thorace transverso, rectangular!, punc- 

 tata, fulvo, ad medium suffuse- fusco ; elytris robtistis, punctato- 

 striatis, pubescentibus, nigro-fuscis, ad marginem (et ad suturam 

 obsolete) fulv is ; antennis filiformibus, elongatis, nigro-fuscis, ad 

 basin articulorum rufo-fulvis ; pedibus ferrugineis, tibiis ante- 

 rioribus femoribusque (ad basin) jiosticis nigro-fuscis. 



Long. corp. 21 lin., lat. 1 fin. 

 c? Long, antenn. circa 4 lin. 



Oblong-ovate, subcylindrical, somewhat depressed, finely pubes- 

 cent, of a fuscous-black colour. Head short, transverse, abruptly 

 deflected at an acute angle in front ; labrum dark fuscous ; the an- 

 terior part of the head (between the base of the antennae and the 

 mouth) is a smooth plane, lamgate, testaceous, with a triangular 

 fuscous marking ; eyes slightly prominent, distant, extending laterally 

 as far as the line of the sides of the thorax ; antennae approximate 

 at their insertion, which is situated on the angle caused by the abrupt 

 inflection of the head : from the insertion of the antennae to the base 

 is a more or less distinct medial fovea, while crossing it at right 

 angles (at some distance from the insertion of the antennae) is another 



