Malacoderm Genera Prionocerus and Idgia. 343° 
3. Eyes much larger, more convex, and more approxi- 
mate, and the antennal joints 6-10 broader and more 
strongly serrate, than in ?; anterior tarsal joints 1-3 with 
a comb along their inner edge, 4 small, narrow ; terminal 
dorsal segment rounded at tip. Genital armature (Pl. XI. 
fig. 15): lateral lobes long, rounded at apex ; median lobe 
narrow, sharply acuminate, curved at tip. 
Hab. 8. Invta (Mus. Brit.), Kanara’ (T. R. Bell), Mala- 
bar? (type of Farmaire), Nilgiri Hills (H. L. Andrewes, 
A. K. Weld Downing, Sir G. F. Hampson), Travancore 
(G. S. Imray), Periya Ghat [Malabar], alt. 2500 ft. (£, 
Ballard). 
An elongate, slender, brilliantly metallic green, blue, or 
eneous insect, with the g-antenne dilated and strongly 
serrate, approaching that of the type of Prionocerus ; the 
legs long and slender ; the labrum trapezoidal, rather large, 
deeply foveate in the centre at the base; the apical joint of 
the maxillary palpi elongate-triangular ; the terminal joint 
of the antenne curved and deeply excavate. Mr. Andrewes’s 
collection contains a long series of this species from the 
Nilgiri Hills, and there are numerous examples of it in 
the British Museum. The Kanara type of Gorham is ?. 
19, Idgia viridescens. 
Tdgia viridescens, Gorh. Ann. Soc, Ent. Belg. xxxix, p. 319 (1895). 
Prionocerus metallescens, Fairm. Notes Leyden Mus. xviii, p. 94 (1896). 
gd. Hyes larger and more approxiniate, and the antennal 
joints 5-10 a little more acute at their inner apical angle, 
than in ¢; anterior tarsal joits 1-3 with a comb along 
their inner edge, 4 small, narrow; terminal dorsal segment 
bisinuato-truneate at apex. Genital armature (Pl. XI. 
fig. 16): lateral lobes broad, narrower and curved inward 
at tip, as seen from above ; median lobe stout, acuminate, 
and almost straight at apex. 
Hab. N. Invia (Mus. Brit.), Simla (Hauser: type of Fair- 
maire), Kasauli (Col. H. J. W. Barrow; coll. Andrewes), 
W. Almora (H. G. Champion), Gopaldhara, Rungbon Valley, 
Sikkim (H. Stevens), Mungphu, Sikkim (es coll, Atkinson) ; 
Cenrrat Iypia (Capt. Boys, m Mus. Oxon.). 
A large, elongate, rather broad, posteriorly widened, ob- 
scure #neous or nigro-ceruleous form, with the prothorax 
and the tip of the antenne fulvous or testaceous; the 
labrum transversely subquadrate, small, concave; the 
eleventh antennal joint curved and deeply excavate ; 
the apical joint of the maxillary palpi elongate. Numerous 
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