DR. F. LEUTHNER ON THE ODONTOLABINI. 465 
there are three or four irregular apical teeth, and a central rounded tooth rather beyond 
the middle. Clypeus vertically descending between the mandibles as in 0. wollastoni. 
The specimen is much damaged in a manner which could only have happened in a 
contest with a rival, for the middle tooth of the right mandible is broken off, the 
same mandible is strongly indented on the underside at the tip, the right canthus is 
almost entirely broken off, and the left one in front. The front tibiee have only two 
spines on the outer side. 
Fabricius’s type of his Lucanus gazella (represented on Pl. XCI. fig. 6, for comparison 
with O. sinensis and O. cwvera) is preserved in the Banksian collection at the British 
Museum. It agrees perfectly with the descriptions of Fabricius and Olivier, but not so 
well with the figure of the latter, in which (in well-coloured copies only) half the 
elytra are represented as dark brown. In other copies, as, for instance, in the working- 
copy at the British Museum, the dark colour extends nearly to the borders, as in 
O. sinensis. It is undoubtedly the true female of 0. bicolor, Oliv. (a male of which is 
contained in the same collection), an opinion in which Mr. C. O. Waterhouse now 
concurs. It came from Siam (or Malacca?), and agrees with specimens from Malacca, 
Sumatra, and Borneo. (Comp. p. 452, anted.) 
21. OponTOLABIS INHQUALIS (Kaup). (Plate XCVI. figs. 12, 120, ¢ .) 
Odontolabis inequalis (Kaup), in Von Harold’s Col. Hefte, iv. p. 77. 
Odontolabis bicolor, var., Parry, Trans. Ent. Soc. Lond. 1870, p. 57. 
Male. Only differs from O. gazella in the constant dark-brown colour of the elytra, 
and by the less spinose front tibize (one or two spines only above the terminal fork). 
Female. Unknown. 
Number of specimens examined: three males (including type) in Major Parry’s col- 
lection, and two males in the British Museum. 
Habitat. Nias. 
Measurements. 
Total length. Head. Mandibles. Prothorax. Elytra. 
millim. millim. millim. millim. millim. 
Fig. 126 .... 52 10 by 18 13 10 by 21 24 by 21 
lips Wigan don 43 9 ,, 145 10 2) ep A) 22 ,, 185 
This insect is constantly darker than the male of 0. gazella from the adjoining island 
of Sumatra. Until the female is discovered, we cannot be certain whether this isa 
constant dark race, or a distinct species. I do not understand why Dr. Kaup compared 
this insect with the males of O. latipennis and O. stevensi, rather than with the closely 
allied O. gazella. 
VOL. XI1.—PART x1. No. 11.—Noveméer, 1885. 8y 
