DR. F. LEUTHNEE 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. milUm. millim. miUim. 



j- (telodont) 81 16-0 by 27 25 12-0 by 27 3-1-0 by 27 



(J. Castelnau's ooU. \ (mesodont) 83 16-5 „ 29 21 13-0 „ 30 36-0 „ 29 



l (amphiodont) .. 79 16-0 „ 29 16 14-0 „ 30 36-0 „ 29 

 cJ . Parry's coll. (Sumatra : meso-"^ 



jo^t) I 67 15-0 „ 24 17 11-5 „ 25 32-0 „ 25 



cJ . Bates's coll. (Borneo) C 64 12-0 „ 21 15-5 10-5 „ 22 290 „ 24 



c?. Parry's coU. (Borneo) J 56 11-0 „ 19 13 10-0 „ 21 27-0 „ 21 



? . Lansberge's coU \ '' '■'"'' ' ^^'^ " ^^ ^^'^ " ^3 



^ I 45 9'0 „ 14 6 10-5 „ 21 27-5 „ 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, 6 ; figs. 10-12, 2 .) 



Odontolabis sommeri, Parry, Trans. Ent. Soc. Lond. (3) ii. p. 16 (erroneously as from Manilla), 



pi. vi. fig. 4 (very bad figure, hardly recognizable). 

 Odontolabis lowei, Gestro, Ann. Mus. Geneva, 1880, xvi. p. 313 (Benkoelen, Sumatra). 



Male. Very like 0. castelnaudi and 0. 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, fiattened, 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. Eront tibiae 

 strongly curved, and broad in front ; upper side channelled, and the outer side with 

 two spines above the terminal fork. 



3y2 



