and Species of Coleoptera. '65 



Alcyoxotus. 



Caput transversum, exsertum ; dypeus a capite haud discretus, 

 apice subemarginatiis ; Zctinuji parvum ; antetnunhxQyQs,, articulis 

 l^-S"" oblongis, 6°-10™ transversim dilatatis, ultimo oblongo-rotun- 

 dato. Pronotum subquadratum, a pleura linea elevata separatum. 

 Ehjtra elongata ; epipUxira angusta. Prosteniimi elevatum ; me- 

 sostenmm antice excisum. Processus abdomiuo-iutercoxalis an- 

 guste triangularis. Femora hand elavata ; tihice breves, quatuor 

 autcriores arcuatoe ; tarsi infra dense pilosi, antici et intermedii 

 articulis (ultimo excepto) trausversis ; unguicidis dentatis. 



Camarimena, to wliich tliis genus may be approximated, is 

 at once differentiated by the absence of a well-defined line 

 separating the pronotum from the tlanks of the prothorax. 

 Maklin says of the pronotum, " apleuris interdum costa latiori 

 separatum;" but in the only reliable species [G. variahilis) 

 the separation is only marked by a slight angle. 



Alcyonotus iridescens. 



A. elongatus, subcyliudricus, uitide niger ; elytris viridi-purpura- 

 scentibus ; femoribus iu medio fulvis. Long. 9 lin. 



Hah. Cape-Coast Castle. 



Elongate, subcylindrical, glossy black ; elytra greenish 

 purple, varying according to tiie light ; femora fulvous, apex 

 and base black ; head finely punctured ; antennas brownish 

 towards the tip, the last five joints pubescent 5 prothorax 

 longer than broad, the sides nearly parallel, the anterior angles 

 rounded, very finely punctured ; scutellum scutiform ; elytra 

 more than twice as long as broad, slightly rounded at the 

 sides, minutely seriate-punctate, the intervals smooth, but with 

 scattered very minute punctures ; beneath very glossy black, 

 the abdominal segments slightly striated longitudinally ; all the 

 joints of the anterior aijd intermediate tarsi, except the last, 

 broadly dilated. 



Prostenus militaris. 



P. niger, opacus ; elytris coeciueis ; metastcruo abdomiueque chaly- 

 beatis. Long. 5 lin. 



Hah. Amazons. 



Head, antennaj, prothorax, and legs deep black and opaque; 

 elytra rich scarlet ; metasternum and abdomen glossy steel- 

 blue, short erect black hairs scattered over the body ; joints 

 of the antennas to the eighth inclusive gradually dilated ; pro- 

 thorax transverse, well-rounded at the sides, obsoletely punc- 

 tured ; scutellum cordiform, black ; elytra with broad and 

 shallow striae not visible without a lens. 



a* 



