1907.] Catalogue of the Coleoptcra of South Africa. 417 



Africa, and South Africa. The only difference between Plasiorrhina 

 and Dyspilophora is that the latter is smaller, the elytra are less 

 parallel laterally, and in the $ the hind tibiee are evenly pubescent 

 inwardly. 



Key to the Species. 



Clypeus slightly sinuate in front (Plcesiorrhina.) 



Elytra elongated, parallel, and bearing a transverse narrow 

 yellow band extending from side to side past the median part . . plana. 



Clypeus deeply emarginate in front {Dyspilophora. 



Elytra with a broad sub-sinuate yellow patch on each side . . trivittata. 



Plcesiorrhina plana, Wied., 

 Germ. Mag., iv., p. 145. 



hcrschcli, McLeay, Illust. Zool. Afric, iii., p. 31. 



taenia var., Wied., Zool. Mag., ii., 1, p. 163. 



deussi, Schoch., Entomol. Nachr., vii., 1898, p. 101. 



Dark bronze on the upper side with a very narrow fiavescent 

 border on the prothorax and a transverse, moderately broad, bi- 

 sinuate flavous band on the elytra reaching from the outer margin to 

 the suture ; pygidium bronze with a fiavescent median patch ; 

 abdominal segments and all sternal parts as well as the side-pieces 

 fiavescent and edged with bronze ; tibiae bronze ; antennae piceous 

 with a metallic tinge ; head and clypeus closely punctate, the 

 punctures on the sides of the prothorax turning to somewhat fine 

 transverse folds ; scutellum sparingly punctulate ; elytra almost 

 parallel, not costulate, punctate, the punctures deep but only 

 moderately closely set, and non-seriate ; pygidium finely plicate 

 transversely ; under side glabrous and sparsely punctate ; inter- 

 mediate tibiae slightly arcuate in the male, the posterior ones bluntly 

 triangularly ampliated at about the median part of the inner side and 

 densely pubescent in the posterior part of the tibia only, while the 

 intermediate tibiae are moderately pubescent along their whole 

 length ; the female differs from the male merely in the non-dilatation 

 of the inner part of the hind tibiae, which, like the intermediate ones, 

 are pubescent along the whole length. 



This species is replaced in East Central Africa by the colour 

 variety P. unchilata, Bat., which is of a redder bronze colour with a 

 more distinct greenish sheen, and in which the post-median elytral 

 band is greatly narrowed and edged with fuscous, but in which the 

 genital armature of the male is absolutely similar to that of 



27 



