1900. j Catalogue of the Golcoptera of South Africa. 69 



impression wanting in G. thalassinus ; the intervals of the elytra 

 are more evenly shagreened, that is to say, the granules are more 

 closely set, slightly smaller, and of equal height ; the shape and 

 sculpture of the metasternum is the same ; the anterior tibiae of the 

 male are also emarginate inwardly at tip, but the emargination is 

 not so circular, nor so deep, and there is no mucro at tip. 



Length 13-15J mm. ; width 8|-9J- mm. 



Hah. Transvaal (Potchefstroom), Orange Free State (Bloem- 

 fontein). 



Gymnopleueus insidiosus, n. spec. 



Greenish blue or dark blue and moderately shining on the upper 

 side, under side and legs nearly black ; head as long as broad, 

 slightly shagreened from the base to about the median part, but 

 foveolate from there with the intervals of the small fovese granulose ; 

 clypeus quadri- dentate, the four teeth long, the two median ones 

 much recurved, anterior part of the head black ; prothorax convex, 

 a little attenuate laterally from the middle to the apex the angle of 

 which is very sharp, slightly sinuate past the median part, and 

 straight from there to the base where the supra-marginal carina ends 

 in a sharp angle, finely and closely punctured, and having a median 

 longitudinal smooth line ending in a small, triangular impression 

 situated above the base ; elytra with narrow, deep stri£e, intervals 

 very finely shagreened ; pygidium finely aciculate ; metasternum 

 produced in a long triangular process the apical part of which is 

 perpendicular with the prosternum, the median part of the meta- 

 sternum is smooth, very slightly punctured, and has a narrow median 

 line reaching from a short distance from the base as far as the apex, 

 and also a shallow depression near the apex, while the sides are 

 densely granuloso-punctate ; anterior tibiae of male incurved at tip, 

 a little dilated inwardly and incised at the extreme end ; anterior 

 coxae with a spine underneath nearer to the apex of the coxa than to 

 the base ; all the tibiae are serrate. 



Length 21-23 mm. ; width 13-14 mm. 



Hah. Southern Rhodesia (Salisbury). 



This species is allied to G. azureus, Oliv., but quite distinct. 



Gymnopleueus caffee, Fahr., 

 Insect. Caffrar., ii., p. 181. 



Light bronze, shining on upper and under sides, median part of 

 metasternum and legs dark bronze, the latter nearly black ; head 



