of Lucanoid Coleoptera. 19 
specimens are longer than the head, flattened, curved at the base, 
and strongly incurved at the apex, the middle part being nearly 
straight, with a small conical point at a short distance from the 
apex on the inner edge. ‘The antennz are small, with a three- 
jointed clava; the maxilla have the outer lobe of moderate length, 
and strongly ciliated; the palpi have the terminal joint somewhat 
sabre-shaped; the mentum is very short and broad, with the 
anterior angles rounded off. The prothorax has the sides straight 
and nearly parallel, the anterior angles acute, and the hind ones 
rounded off without any spine or lateral conical point. The elytra 
are short and ovate, without any longitudinal striz. The fore 
tibize are rather long, with two teeth on the outer edge, exclusive 
of the two strong ones at the apex. The four posterior tibiae are 
destitute of a spine in the middle. The prosternum terminates 
in a slightly dilated and convex ridge between the base of the 
fore legs. The tarsi are very short. The mesosternum is slightly 
channelled along the middle. 
The small variety of the male has the head smaller than the 
prothorax, and the latter comparatively smaller than in the larger 
individuals, with its sides rather more rounded ; the front margin 
of the head is somewhat emarginate, and the sides behind the eyes 
are marked with large punctures; the mandibles are shorter than 
the head, strongly curved, with a large conical tooth near the base 
on the inner edge, and the apex obtusely bifid; the mesosternum 
has also a rather deeply impressed, narrow, punctate channel. 
The female has a much smaller head, the canthus forming an 
angle at the sides in front of the eyes; the front of the head is 
slightly emarginate, and the clypeus produced into a small quadrate 
setose lobe; the sides of the head are very strongly punctured. 
The prothorax has the sides also punctured, and the lateral 
margin is more rounded than in the male, especially at the pos- 
terior lateral angles. The elytra have the sides and extremity 
punctured. The palpi are rather shorter and stronger than in the 
male, but the tibize of all the legs are spined, as in the other sex. 
Plate XI. Fig. 1, The large male somewhat magnified. 1a, outline of portion 
of the head; 1b, front of the head seen from the front; 
1c, maxilla; 1d, mentum; le, mentum seen from within, 
with the labium and palpus; If, antenna; lg, pro- 
sternum seen from beneath ; 1h, ditto, seen sideways. 
Fig. 2, The small-sized male. 2a, outline of the side of the head ; 
2 b, mandible. 
Fig. 3. The female. 3a, the head; 3b, the eye, divided by the canthus ; 
3c, antenna; 3d, maxilla; 3e, mentum; 3f, labium and 
palpus.—J,. O. W.] 
c2 
