DK. F. LBUTHNER ON THE ODONTOLABIXI. 435 



Section I. 

 1. Odontolabis platyxotus, Hope. (Plate LXXXVIII. figs. 9-11, d ; 12, ? .) 



? Lucaiius plati/notus, Hope, Cat. Lwc. Col. p. 18. 



Anoplocnemus platyiiotus, Thorns. Ann. See. Ent. Fr. (4) ii. p. 391 (1862). 

 Odontolabis platynotus , Parry, Trans. Ent. Soc. Lond. (3) ii. p. 77. 



^ Odontolab'is emarginatus (Reiche), Saund. Trans. Ent. Soc. Lond. (2) iii. p. 19, pi. iii. fig. 4 



(telodont form ; figure bad). 

 Odontolabis evansii, Westw. Trans. Ent. Soc. Lond. (2) iii. p. 201, pi. x. fig. 5. 



Male. Uniform dull black ; under-surface rather shining ; head broad, convex, front 

 edge emarginate, sides oblique ; canthus oblique, slender ; a conspicuous promi- 

 nence behind the eyes; prothoi'ax broader than the head and elytra, front edge 

 strongly emarginate on each side, the sides slightly curved and then strongly indented, 

 the hinder margin waved ; lower external maigin transversely wrinkled in the larger 

 specimens only (compare fig. 10 5); prosternal process pointed; elytra flattened or 

 slightly convex, broad at the base, and much narrowed towards the tip ; front tibiae 

 moderately long, widened in front, with five spines above the terminal fork. 



Mandibles. 



1. Forma telodonta. — Mandibles nearly as long as the head and prothorax together, 

 slender, strongly curved inwards, with four teeth at the tip and two at the base (fig. 9, 

 0. evansi, Westw.). 



2. Forma amphiodonfa. — Mandibles shorter and straighter, with five teeth at the tip 

 and two at the base (fig. 10). 



3. Forma priodonta. — Mandibles straight, as long as the head, slightly curved inwards 

 at the tip, with seven unequal teeth on the inner side (fig. 11). 



Female. Uniform dull black ; under-surface shining ; head slightly convex ; canthus 

 broad ; prothorax rather broader than the elytra, its front edge deeply emarginate on 

 each side ; front angles acute ; the sides but slightly waved as far as the middle spine, 

 and then somewhat emarginate ; the hind margin waved ; elytra strongly convex and 

 pointed at the extremity as in the male ; front tibite slender, with five spines above the 

 terminal fork. 



Number of specimens examined : fourteen males, nine females. Hope Collection, 

 S type, Oxford ; British Museum, &c. 



Habitat. China. 



Measurements. 



Total leiigtli. Head. Maurfibles. Prothorax. Elytra, 



millim. millim. niiUim. millim. millim. 



Telodont 41 8 hy 13 12 7-5 by 15 17-5 by 15 



Amphlodont 38 7 „ 13 9 7'5 „ 15 17-5 „ 13 



Priodont 32 5 „ 9-5 (i C-5 „ 12-5 17 „ 14 



$ 25 4 „ 7-5 4 G „ 11-U 13 „ 11-5 



3s2 



