DR. F. LEUTHXER ON THE ODONTOLABim. 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. woUastoni. 

 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 tibi^ have only two 

 spines on the outer side. 



Fabricius's type of his Lucanus gazella (represented on PL XCI. fig. 6, for comparison 

 with 0. sinensis and 0. cuvera) 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 

 0. 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 X), and agrees with specimens from Malacca, 

 Sumatra, and Borneo. (Comp. p. 452, antea.) 



21. Odontolabis in^qualis (Kaup). (Plate XCVI. figs. 12, 12 b, 6 .) 



Odontolabis inaqualis (Kaup), in Von Harold's Col. Hefte, iv. p. 77. 

 Odontolabis bicolor, var.. Parry, Trans. Ent. Sec. Lond. 1870, p. 57, 



Male. Only differs from 0. gazella in the constant dark-broT^^l colour of the elytra, 

 and by the less spinose front tibiae (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. 



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 is a 

 constant dark race, or a distinct species. I do not understand why Dr. Kaup compared 

 this insect with the males of 0. latipennis and 0. stevensi, rather than with the closely 

 allied 0. gazella. 



VOL. XI. — PAET XI. No. 11. — November, 1885. 3t 



