460 DE. P. LEUTHNER ON THE ODONTOLABINI. 



This wonderful Bornean species was described by Major Parry from a telodont form, 

 which long remained unique in his collection. From its analogy with 0. woUastoni I 

 anticipated that parallel forms would occur, and my supposition was at length fully 

 confirmed. I found two specimens of the form pectinata in Herr van Lansberge's 

 collection under the name of 0. parryi, MS., a third specimen (fig. 3) and a single 

 female from Borneo, which the owner kindly allowed me to describe and figure. The 

 narrow black band on the suture was constant in every specimen examined. 



18. Odontolabis ludekingi, Voll. (Plate XCIII. figs. 10, 11, 6 ; fig. 12, ? . 

 Plate XCIV. fig. 8, s .) 



(J. Lucanus ludekingii, Voll. Tijdschr. Ent. iv. p. 105, pi. v. fig. 2 (figure inexact). 

 Odontolabis ludekingii, Parry, Tr. Ent. Soc. Lond. (3) ii. p. 13, pi. ii. fig. 1. 



Male. Very like that of 0. woUastoni, but always recognizable by the difi'erence in 

 the mandibles and the colour of the elytra. Uniform black, elytra excepted ; head and 

 prothorax as in 0. woUastoni ; elytra yellow, with a narrow black stripe on the suture ; 

 mandibles strongly convex and incurved. 



Mandibles. 



1. Forma telodonta (^). — Mandibles longer than the head, slender, with three or four 

 apical teeth, and a flattened, bifid central tooth, directed downwards (PI. XCIV. fig. 8). 



2. Forma mesodonta. — a. Mandibles longer than the head, with three or four apical 

 teeth, two central teeth, and a strong obtuse basal tooth, as in fig. 7 (Vollenhoven's 

 type in Leyden Museum) ; b. Mandibles with a single central dichotomous tooth, and 

 a strong obtuse basal tooth (fig. 10). 



3. Forma amphiodonta. — Fig. ii. as in 0. woUastoni (fig. 9). 



Female. Eesembles that of 0. woUastoni in form and size, but may be distinguished 

 from it by the black mark on the elytra, which is narrower at the shoulders. 



Number of specimens examined : eight males and three females in Leyden Museum, 

 and in the collections of Messrs. Parry and van Lansberge. 



Habitat. Eastern Sumatra (also Javal). 



Vollenhoven's types are in the Museum at Leyden, where Herr Ritsema showed me 

 them. The largest specimen agrees fairly with Vollenhoven's figure ; and the second 



