Malacoderm Genera Prionocerus and Idgia. 33a 
extremely large, almost contiguous ; labrum transverse, 
subtrapezoidal, moderately large ; apical joint of maxillary 
palpi long, cultriform ; antenne moderately long, joints 
4—10 gradually increasing in width and decreasing in length, 
10 longer than broad, 11 about the length of 9 and 10 
united, curved, hollowed on its inner face. Prothorax 
longer than broad, very uneven, rugulosely punctate. 
Elytra long, rounded at the tip; densely, rugulosely 
punctate. Anterior tarsal joints 1-3 with a narrow black 
comb on their inner edge. Genital armature (Pl. XI. fig. 5): 
lateral lobes broad, short ; median lobe drawn out into a 
very long, slender, strongly curved point. 
Length (excl. head) 9, breadth 38 mm. 
Hab. W. Arrica, Senegal (Mus. Brit.). 
A male in the Museum, labelled “ Epiphyta melanura, Dj., 
Senegal,” agrees with the brief diagnosis of J. terminata, 
Cast., from that locality, and a longer description is given from 
the specimen before me. It is separable from J. longipalpis 
by the smaller labrum, the shorter, less dilated antenne, 
and the wholly testaceous prothorax. J. abyssinica has a 
much larger labrum, a smaller head, a narrower apical 
patch, &e. The similarly-coloured Prionocerus senegalensis, 
Cast., under which #. melanura, Dej., is placed as asynonym 
in the ‘ Munich Catalogue,’ should have the antenne serrate 
as in the type-species of that genus. 
4. Idgia apicalis. 
Prionocerus (Idgia) apicalis, Gerst. Arch. fiir Naturg. xxxvii. p. 56 
(1871) ; Von der Decken’s Reise in Ost-Afrika, iii, 2, p. 159 (18738). 
&. Eyes very large, subapproximate above and beneath ; 
anterior tarsal joints 1-3 with a black comb along their 
inner edge, 4 small, narrow. Genital armature: lateral 
lobes long, broad; median lobe narrow, acuminate, some- 
what hooked at the tip. 
Hab. EB. Arnica, Mombasa and Zanzibar. 
A male from Zanzibar, received by the Museum in 1868, 
is certainly referable to this species. A narrow, elongate, 
ochraceous insect, with the head (except in front), anda 
small patch at the tip of the elytra, black; the antennz long, 
subfiliform ; the body thickly pubescent, the head with 
numerous long dark bristly hairs, and the elytra sparsely, 
seriately nigro-setose; the apical joint of the maxillary 
palpi Jong, subcultriform ; the labrum transverse, subquad- 
rate. The genital armature has not been dissected, but it is 
partly extruded in the single specimen before me. 
