474 PE. P. LEUTKNEE ON THE ODONTOLABINI. 



somewhat widened in front, and channelled on the upper side, with one or two spines ' 

 above the terminal fork ; tarsi beneath very hairy. 



Mandibles. 



1. Forma telodonta. — Mandibles rather longer than the head, strongly curved, the 

 tip forked, behind which stand five or six small teeth, the hindermost most strongly 

 developed (fig. 4). 



2. Forma p-iodonta. — Mandibles very short and narrow, with four or five iiTegular 

 teeth (fig. 5). 



Female. Uniform dark chestnut-brown, with or without metallic lustre. Head 

 flattened, with an obtuse projection before the eye ; prothorax with the sides acute, 

 then slightly curved, and emarginate behind, hinder edge waved ; front tibiae rather 

 broad, with two spines above the terminal fork. 



Number of specimens examined: about twenty-five males and eight females, in 

 various collections, including the male types of Hope and Westwood, and the female 

 type of Parry. 



Habitat. Prince of Wales's Island and Southern Malacca (Singapore). 



29. Odontolabis caeinatus, Linn. (Plate XCVII. figs. 7-9, d; fig. 10,?; and 

 figs. 11-13, d; fig. 14, S.) 



(J. Lucanus carinatus, Linu. Mus. Lud. UJr. p. 34; Syst. Nat. i. 2, p. 560 (from India) ; Thunb. 



Mem. Sec. Mosc. i. p. 193, pi. xii. fig. 2. 

 Odontolabis cingalensis, Parry, Trans. Ent. Sec. Lend. (3) ii. p. 16, pi. x. fig. 8. 

 Odontolabis bengalensis, Tennent, Ceylon, i. p. 276. 

 (J ? . Odontolabis nigritus et intermedins, Deyr. Ann. Soc. Ent. France (4) iv. p. 314 (from Ceylon). 



Male. Uniform shining black, head flattened, quadrangular, the sides nearly straight, 

 ■with no projecting spine behind the eye, canthus before the eye broad, then narrowed ; 

 mentum clothed with red hair, and in very rare cases the base of the gula likewise ; 

 prothorax broader than the head, strongly emarginate on each side in front, the front 

 and hind margins clothed with silky reddish-brown hair, front angles produced into a 

 point, sides straight, or only slightly curved, then strongly emarginate ; hinder margin 

 much waved ; prostemal process strongly developed (fig. 12 b) ; elytra flattened, or 



I have examined a great number of specimens, but have never been able to detect more than two spines, 

 although both Westwood and Burmeister mention five. 



