1904. | Catalogue of the Coleoptera of South Africa. 53 
Gren. DOLEROSERICA, n. gen. 
Mentum and buccal organs of the usual shape; antenne 10- 
jointed, antennal club 3-jointed, very long in the male; clypeus not 
constricted laterally, but gradually narrowed from the base in the 
manner of Awtoserica, Neoserica, &c., separated from the head by a 
frontal suture, and having no clypeal keel or suture, nor is the 
anterior part depressed or excavated along the anterior margin; eyes 
strongly divided in the anterior part by the genal canthus which 
projects very much, and having also a posterior keel situated higher 
than the genal canthus and not connected with it ; body more or less 
iridescent, often with a silky sheen, either short and convex, or sub- 
elongated and only moderately convex, glabrous except for a few 
setz near the anterior angle of the prothorax and along the marginal 
fold of the elytra; anterior tibie bidentate outwardly; hind cox 
short, very broadly dilated inwardly, and with two sets of diverging 
bristles on the upper margin; hind tibize either broadly ampliated 
inwardly or not; anterior tarsi somewhat short, posterior fairly long, 
hind spurs longer than the basal joint which is not longer than the 
second, claws slender, very little divaricating, cleft underneath, but 
with the upper tooth not abruptly curved; coxz very broad, their 
apical margin quite straight; trochanters of anterior legs not broadly 
dilated. 
Key to the Species. 
A’. Body ampliato-ovate, hind tibiz broadly dilated inwardly. 
Clypeus emarginate in front, upper side of body opaque, very silky — curtula. 
Clypeus emarginate in front, upper side of body shiny .. .. .. gentilis. 
Clypeus straight in front, upper side of body opaque, very silky .. Jlaetula. 
At. Body elongated, hind tibiz not broadly dilated inwardly. 
Anterior margin of clypeus sinuate, sub-angular in the centre .. .. festa. 
Anterior margin of clypeus quite straight... .. .. .. «. «+. duspicata. 
DOLEROSERICA CURTULA, Fahr., 
Insect. Caffr., i1., p. 137. 
Bronze-black, opaque on the upper side, sericeous and with a 
strong iridescent sheen, antennz piceous-red ; clypeus deeply emar- 
ginate in front with the outer angles slightly rounded, the margins 
are slightly reflexed, the anterior one is not aculeate in the centre, 
the strongly diagonal lateral one is not sinuate, the genx are strongly 
slanting and project much beyond the eye, the posterior keel is on a 
