Malacoderm Genera Prionocerus and Idgia. 339 
I. nitida in that respect), and the ¢-armature very different 
from that of J. melanura. 
The length (excl. head) varies from 83-10 mm. The 
eleventh antennal joint is deeply excavate and more than 
twice the length of the tenth. 
12. Idgia ungulata, sp. n. 
Elongate, narrow, shining, finely pubescent, and sparsely 
setose; testaceous, the head (except the labrum in part or 
wholly, aud sometimes a spot at the base), and a small patch 
at the apex of the elytra, black, the antennee, tibiz, tarsi, and 
apices of the femora more or less infuscate. Head some- 
what produced in front, the labrum transverse, concave 
eyes very large, almost contiguous in 2; antennie slender, 
distinctly widened outwards, joint 4 a little shorter than 
3 or 5, 11 deeply excavate within, twice as long as 10. 
Prothorax very little wider than the head, slightly longer 
than broad, feebly sinuate at the sides posteriorly, sparsely 
punctuate. Elytra moderately elongate, finely, somewhat 
densely punctate. 
g. Anterior tarsal joints 1-3 with a comb along their 
inner edge; posterior tibiz distinctly arcuate towards the 
apex, the spurs strongly developed, curved, the upper one 
longer than the other. Genital armature (PI. XI. fig. 12) 
lateral lobes long, broad; median lobe sinuate, gradually 
narrowed to the rather blunt tip. 
Length (excl. head) 6-74, breadth 2-2? mm. 
Hab. Cuina (Mus. Brit.), Hong Kong (Mus. Brit., F. W. 
Terry, J. J. Walker), Amoy (G. Lewis). 
A long series, males preponderating. Less elongate than 
q, deusta as here identified, the head not wholly black in 
front, the apical patch smaller ; the male with differently 
formed posterior tibie, longer asymmetric spurs (suggestive 
of those of certain Scirtes), and dissimilar genital armature, 
13. Idgia flavicollis. 
Idgia flavicollis, Redt. Reise der Novara, ii. p. 111 (1868); Fairm. 
Ann. Soc. Ent. Fr. (6) ix. p. 45 (1889). 
3. Eyes distant, as in ?; anterior tarsal joints 1-3 with 
a comb along their inner edge. Genital armature (Pl. XI. 
fig.13): lateral lobes long; median lobe narrow, pointed at tip. 
” Hab. Cua, Hong Kong. 
There is a long series of this species in the Museum, in- 
cluding several ‘examples captured by Commander W alker 
