of various exotic Heteropterous Hemiptera. 245 
ad basin scutelli, capite ¢ in lobos duos magnos conicos 
convergentes producto. 
Long. corp. lin. 7. 
Habitat in Africa tropical. occident. D. Savage. 
In Mus. D. Hope. 
This insect differs from the other species of this and the adja- 
cent subgenera, which have the ocelli more close together than 
the distance between them and the eyes, in the more parallel form 
of the depressed body, in the conical form of the porrected head, 
and the nearly straight sides of the prothorax; whilst from Hete- 
rocrates coracina it differs in haying the promuscis extending only 
to the base of the hind legs, with four joints, the first and fourth 
joints shortest and the second and third longer and nearly of equal 
length. But the most curious character is the hidden position of 
the spiracles; there is, indeed, along the lateral margins of the 
ventral surface of the abdomen, on each side, a lateral row of 
minute pale spots on the black disc, each of which presents in the 
centre a little black dot, which at first sight appears like one of the 
real spiracles; but the latter are quite lateral and placed within the 
very narrow membranous fold which unites the dorsal and ventral 
surfaces of the abdomen. It is from this character that I have 
given the subgeneric name used above. ‘The antenne in the only 
specimen which I have seen have only three joints, (not including 
the radicle between the first and second,) but it is probable that 
the fourth joint has been broken off; the basal joint is pale luteous, 
the remainder black. The feet are much more slender than in 
Ph. Bucephalus. The abdomen beneath is very flat and highly 
polished and black; the femora and tibic are luteous ; the wings 
are of a black brown colour, and of the ordinary structure of the 
genus. 
Plate XVIII. fig. 2, the insect slightly magnified ; 2a, antenna, with the 
presumed terminal joint indicated by dots; 26, apex 
of the abdomen seen from above; 2c, underside of 
the abdomen. 
Plataspis (Cantharodes) cenosa, Westw. (Pl. XVII, fig. 3.) 
Supra obscura, sublutescens, opaca, nigro-punctatissima ; 
scutello fascid indistinct&é mediand subpallidiori; capite 
magno, subconcavo, postice in collun angustato; prothorace 
antice valde emarginato, lateribus rotundatis, in medio parum 
angulatis ; pedibus subgracilibus. 
Long. corp. lin. 8. 
Habitat Cape Palmas, Africae tropic. occid. D. Savage. 
In Mus. Hope, Westw. 
