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DR. F. LEUTHNER ON THE ODONTOLABINI. 45: 
Number of specimens examined: sixty-one males and fifteen females, in different 
collections. The males vary in size from 46 to 77 millim., and the females from 33 to 
39 millim. 
Habitat. North India (Silhet, Assam). 
Measurements. 
Total length. Head. Mandibles. Prothorax. Elytra. 
millim. millim. millim. millim. millim. 
ail 5:0 by 2: 2 2-1) by 25 30-0 by 26 
Telodont ene 15:0 by 23 ae 12:0 by 2 30 ) by 26 
67 ie Ys) 0) 22 10:0 ,, 22 ISS) 5 2B) 
61 2 7 0: 2 26-( 22 
Mesodont .... tes ne a ae > A ue? Z 
58 12 13 10:0 ,, 20-5 27-0 ,, 22:5 
; r 56 2 05 ,, 2 26-0 ,, 20 
Priodont PO 4a ee i opt ae BRE 
46 9 9 9-0 ,, 18 23:0 ,, 19 
9 he 65 by 12 5 9:0555 Lz 22:0 ,, 18 
a ia, 33 6-0 ,, 10 45 85, 15 19-0 ,, 16 
This species is closely allied to the last, from which it only differs in the colour of 
the elytra. It was first described by Hope as O. cwvera, in 1845; three years after- 
wards he described the mesodont form as 0. prinseppii, and changed the name of 
O. bicolor, Saund., to O. saundersi. Hope’s O. delesserti is quite distinct from Guérin’s 
species; and I have convinced myself, by an examination of the types in Oxford, that 
they are only a small male and female of the present species from Assam. 
13. OpontToLaBis MounotTI, Parry. (Plate XCI. fig. 5,¢.) 
Odontolabis mouhotii, Parry, Trans. Ent. Soc. Lond. (8) ii. p. 14, pl. i. fig. 1 (figure inexact). 
Male. Intermediate between 0. sinensis and O. cuvera. Uniform black, with the 
exception of the pale yellowish-brown elytra. Head large, front edge semicircularly 
emarginate, clypeus depressed, canthus narrow, oblique, the spine behind the eyes 
placed rather behind the canthus; beyond the spine the head narrows to the neck; 
mandibles as long as the head, slightly imcurved, upper surface flattened, the right and 
left sides asymmetrical, the right with four or five small irregular apical teeth, followed 
by a round obtuse middle tooth and an obtuse basal tooth; on the left side these are 
less developed; prothorax rather broader than in 0. sinensis, but similar in form; 
elytra broad, upper side pale brownish yellow, except a small straight black stripe on 
the suture, somewhat broader at its base on the scutellum, and extending to the 
shoulders; rim of the elytra yellow beneath ; front tibiz long and narrow, with three 
spines on the right tibize and four on the left above the terminal fork. 
Lemale. Unknown. 
Habitat. Cambodia. 
A single specimen (the type) in Herr van Lansberge’s collection (formerly in 
Count Castelnau’s). 
