174 ON THE GOLIATHIDEOUS 
margin. The basal joints of the tarsi are terminated by a small 
point; and the last joint on the fore tarsi is furnished beneath with 
a small tuft of black hairs. The tibize are chalybeeous or zeneous 
black, and the tarsi black. The body beneath is of a dark shining 
olivaceous green. The femora and sides of the metasternum tinged 
with coppery red: the third, fourth, and fifth segments of the 
abdomen are marked on each side with a white spot; and the 
podex has a transverse patch of white at the base. 
The female is similarly coloured, but rather darker, and with 
the punctures very close and strong, especially on the prothorax, 
with an interrupted narrow line along the middle, partially free 
from punctures: the sides and anterior margin of the head are 
elevated and black, as are also the tibiz and tarsi. The abdomen 
of the male presents only a slightly depressed and very slender line 
along the middle of the three or four basal segments; and the 
extremity is more pointed than in the female. The sternal process 
is but slightly porrected, with avery small portion only of the meso- 
sternal portion visible in front (pl. 42, fig. 1 1¢). The basal lobe 
of the maxille is destitute of a spine in both sexes (fig. 1 a), and 
the terminal joint of the maxillary palpi is somewhat longer in the 
male than in the female (fig. 2 a). 
I have to return my best thanks to Mr. Melly for an opportunity 
of describing and figuring this new and beautiful species, as well as 
several other interesting novelties, which will appear in the next 
number of this work, recently arrived in this country, having been 
collected by Mr. Burton in the hilly and hitherto unknown country 
lying between 25 and 26° S. lat. and 27 and 28° E. long. The 
specimens of the present species were taken on the trunks of a tree 
named Zizyphus; they flew exceedingly fast, and only those speci- 
mens were taken which were found in pairs. Mr. Melly has 
proposed to name the species in honour of the Earl of Derby, Pre- 
sident of the Zoological Society ; and I have much pleasure in 
adopting his suggestion. 
Section 2,—EUDICELLA. White. 
This section is distinguished by the forked central horn of the 
celypeus of the males; the anterior male tibiz simple externally, but 
denticulated within ; the terminal joint of the fore tarsi, in the same 
sex, not furnished with a brush of hairs; the broader mentum and 
shorter scutellum: together with the strongly dentate inner lobe of 
