DR. F. LEUTHNER ON THE ODONTOLABINI. 467 
Number of specimens examined: eight males and two females from the collections of 
Van Lansberge (from Castelnau’s and Mniszech’s collections), Parry, and Bates; two 
males collected by Ludeking at Solok, Sumatra, are in the Leyden Museum. 
Habitat. Sumatra, Borneo. 
Measurements. 
Total length. Head. Mandibles. Prothorax. Elytra. 
millim. millim. millim. millim. millim. 
(telodont) .... 81 16-0 by 27 25 12-0 by 27 340 by 27 
d. Castelnan’s coll. | emsoon Rae OS 16:5 5, 29 21 13:0 ,, 30 36:0 ,, 29 
(amphiodont) .. 79 16-0 ,, 29 16 140 ,, 30 36-0 ,, 29 
¢. Parry’s coll. (Sumatra; meso- ) © 
Gab Were Laan i ibe Be cn ie ee B20ei 20 
6. Bates’s coll. (Borneo) ........ ? 64. 12:0),, 21 15°5 10°5 ,, 22 29:0 ,, 24 
do. Parry’s coll. (Borneo) ........ J) 56 inlays ai) 13 10:0 ,, 21 ZERO 21 
: 49 95 ,, 15 6 115 ,, 22 29-0 ,, 23 
©. Lansberge’s coll. ............ { 45 9:0 ,, 14 6 105 ,, 21 275 ,, 21 
Two specimens from Borneo (one of which, a male from Major Parry’s collection, is 
represented at fig. 3) show considerable differences both in the mandibles and in the 
form of the prothorax ; but two specimens are not enough to enable me to speak posi- 
tively as to whether they should be referred to a distinct species or not. For the 
present I prefer to consider them as representing a local race. 
23. ODONTOLABIS SOMMERI, Parry. (Plate XCV. figs. 6-8, ¢; figs. 10-12, 2.) 
Odontolabis sommeri, Parry, Trans. Ent. Soc. Lond. (3) ii. p. 16 (erroneously as from Manilla), 
pl. vi. fig. 4 (very bad figure, hardly recognizable). 
Odontolabis lowei, Gestro, Ann. Mus. Genova, 1880, xvi. p. 313 (Benkoelen, Sumatra). 
Male. Very like O. castelnaudi and O. brookeanus, of the size of the second, but 
more resembling the first in the shape of the mandibles. Upper side brown, elytra 
paler. - Underside, except the metasternum, dark blackish brown. Mandibles poly- 
morphic. Head smooth, flattened, front edge but slightly emarginate ; canthus very 
narrow: spine behind the eyes obtuse, and sloping obliquely backwards; mentum and 
gula clothed with long red hair. Prothorax very broad, front strongly emarginate at 
the sides, the sides convex, strongly emarginate behind the middle spine, which is hardly 
developed. Elytra flattened, uniform pale brown, but the base of the scutellum is deep 
black. The suture and the borders are very narrowly edged with black. Front tibie 
strongly curved, and broad in front; upper side channelled, and the outer side with 
two spines above the terminal fork. 
