316 Mr. Chas. O. Waterhouse on Apterocyclus. 
latiore, postice omnino rotundato; scutello parvo; elytris 
subrotundatis (3) vel rotundatis (9); metasterno brevis- 
simo, nitido; tibiis anticis posticisque inermis, intermedius 
unidenticulatis (3) vel inermis (¢). 
3. Long. lin. 7; lat. elytrorum lin. 3. 
@. Long. lin. 8; lat. elytrorum lin. 4¢. 
Short, somewhat depressed, sooty- 
black ; the head broad, shghtly angu- 
lar at the sides, above very minutely 
granular, sparingly and indistinctly 
punctured about the eyes, more dis- 
tinctly punctured towards the front 
margin; canthus slender; clypeus 
wide, nearly straight in front, only 
very slightly produced in the centre 
in the male; there is a tendency to a reddish colour at the 
base of the mandibles, and on the canthus. The thorax is 
distinctly broader than the head, the front margin bi- 
sinuate; the sides are very little rounded, the whole of the 
posterior part of the thorax is semicircular ; the upper 
surface is very minutely granular, sparingly and indis- 
tinctly punctured. LElytra in the male a trifle nar- 
rower than the thorax, narrowest at the base, gradually 
becoming broader to the apical two-thirds, the apex 
completely rounded; each elytron presents two indistinct 
longitudinal impressions; the suture near the base is 
rather less opaque than the other portions of the elytra, 
and is sparingly and minutely punctured; in the female 
the elytra are a little broader than the thorax, and much 
more rounded at the sides. The anterior tibiz are 
elongate-triangular, unarmed; the intermediate tibiz are 
sub-cylindrical, simple in the female, and furnished with 
a minute sub-medial tooth on the outside in the male, 
the apices on the outer-side in both sexes simple; the 
posterior tibiee are sub-cylindrical, unarmed, bowed out- 
wards in the female, nearly straight in the male. The 
metasternum is polished ; extremely short, so that the 
bases of the intermediate and posterior pairs of legs are 
scarcely further apart than the posterior legs are from 
each other. 
Hab.—Honolulu, Sandwich Islands. 
Sent to the British Museum by Harper Pease, Esq., 
with the note “‘ Mountains of Kanoi; only two found.” 
