142 
Annals of the Transvaal Museum. 
second converging towards its middle, the outer two more irregular ; 
pro- and mesopleurae opaque, alutaceous, densely covered with white 
pubescence ; the metapleurae smooth, shining, bare, with a stout oblique 
keel above the middle on the basal half ; metanotal spines almost as long 
as they are wide at the base ; abdominal petiole almost twice longer than 
wide. 
Helioryctes Smith. 
Helioryctes quadridentatus, sp. n. 
Black ; the abdomen and the legs, except the coxae and trochanters, 
rufo- testaceous ; the palpi dark- testaceous ; the wings dark fuscous- 
violaceous ; the nervures and stigma black ; the clypeus with two short 
stumpy teeth on either side of the middle ; the coxal spine three-fourths 
of the length of the coxa, curved, narrowed towards the apex, which is 
testaceous ; the tibiae with three rows of spines, the central row being 
the longer ; the basal fourth bears no spines ; the tarsi thickly, stoutly 
spinose, the four anterior more thickly than the posterior ; the long spur 
of the hind tibiae extends shortly beyond the middle of the metatarsus 
the anterior tibiae with the spines shorter and sparser than on the others ; 
outer orbits, lower part of front and clypeus densely covered with silvery 
pubescence ; head and pro- and mesothorax closely, somewhat strongly 
punctured, the propleurae more weakly, the mesopleurae more strongly 
than the mesonotum, the latter with a deep, curved, crenulated furrow 
down the apex of the basal fourth ; there is a crenulated furrow between 
the scutellum and post-scutellum ; the depressions bordering the latter 
irregularly striated ; the large semicircular area on the base of metanotum 
has a longitudinally striated band on the base ; the rest is rather stoutly 
irregularly reticulated ; the outer side is more widely, longitudinally 
striated, the outer keel ending in a short tooth ; the apical slope is irregu- 
larly, transversely striated, the striae stronger on the outer edge; meta- 
pleurae rather strongly, closely, obliquely striated, the striae more widely 
separated above than below ; the abdomen becomes gradually narrowed 
towards the apex ; the basal two segments are weakly, the others more 
strongly punctured, the last more strongly than the penultimate, and 
with the sides keeled ; ocelli in a triangle, the hinder separated from each 
other by a slightly greater distance than they are from the eyes, to which 
they are united by a narrow, oblique furrow ; a smooth line runs down 
from them to the antennae. Female. 
Length, 15 mm. 
The first transverse cubital nervure is, below the pedicle, roundly 
curved backwards, the second is longer and obliquely sloped ; the third 
is less roundly, obliquely sloped ; mandibles closely, irregularly, obliquely 
striated. 
The generic description given by Smith is defective, in as much as 
he has omitted to state that there is a spine on the hind coxae. The genus 
is not mentioned by Kohl in his generic revision of the Fossores, beyond 
copying Smith’s .description (Ann. K. K. Hof. Mus., XI, 387). Bingham, 
in his description of the Indian species (Fauna of Brit. India, Hymen, i, 
