DR. F. LEUTHNER ON THE ODONTOLABINI. 459 
was enabled to bring together the various male forms, which are mostly to be found 
singly in various museums. The specimens figured on Pl. XCTII. figs. 5, 6, 9, were 
collected by Mr. H. O. Forbes in Balacud, in the Residency of Palembang, at an 
elevation of 5300 feet, and Iam much indebted to him for the kind permission to 
figure and describe them. I am only acquainted with two other specimens of the new 
and interesting form pectinata, both from Lahat, in the Museums of Leyden and 
Amsterdam, the latter of which agrees with fig. 7 in colour. 
17. ODONTOLABIS VOLLENHOVENI, Parry. (Plate XCIII. figs. 1-3,¢; fig. 4,2.) 
3. Odontolabis vollenhovii, Parry, Trans. Ent. Soc. Lond. (3), ii. p. 13, pl. viii. fig. 13 (good figure). 
Male. Very like O. wollastoni, but larger ; elytra orange-yellow, the black mark still 
narrower than in 0. ludekingi, running parallel with the suture, and ending in a point ; 
under-surface and legs entirely black; head with a reddish-brown triangular spot on 
the vertex ; clypeus of the same colour, otherwise as in 0. wollastoni. 
Mandibles. 
1. Forma telodonta.— As in O. wollastoni (fig. 1; comp. fig. 5). 
2. Forma pectinata.—As in O. wollastoni, but the basal tooth is much more strongly 
developed, and the small comb-like teeth above the central tooth are longer and 
stronger (fig. 2; comp. fig. 6). 
3. In an amphio-mesodont form the apical teeth are broader than in 0. ludekingi 
the mandibles are more strongly curved, the central tooth projects more in front, and 
there is only one small tooth on the right mandible and one on the left (fig. 3). 
4. Amphiodont and priodont forms unknown. 
Female. Very like that of O. ludekingi, but larger, prothorax broader, elytra dark 
yellow, with a narrow black lanceolate mark in the middle, the rim black beneath, 
front tibiz straight, with three spines above the terminal fork. Unique in Herr van 
Lansberge’s collection. 
Number of specimens examined: five males and one female, in the collections of 
Messrs. Parry and van Lansberge. 
Habitat. Borneo (one telodont form said to be from Java). 
Measurements. 
Total length. Head. Mandibles. Prothorax. Elytra. 
millim. millim. millim. millim. . millim. 
Parry’s type (telodont; Borneo)...... 75 14:0 by 24 26 10 by 23 29 by 23 
Lansberge’s coll. (W. Java).......... 72 14:0 ,, 23 26 10 ,, 23 28 ,, 22°5 
Lansberge’s coll. (Borneo; pectinata).. 78 15:0 ,, 25 26 TORR B eS ol ,, 24 
Lansberge’s coll. (Borneo; pectinata).. 71 12:0 ,, 23 23 10 ,, 24 29 5, 23 
Lansberge’s coll. (mesodont) ........ 65 15:0 ,, 22 19 10 ,, 22 28 ,, 23 
Lansberge’s type, 9 ......0e-eeeee 40 75 ,, 13 9 ,, 18 23 +, 19-5 
3x2 
