448 DE. F. LEUTHNEE ON THE ODONTOLABINI. 



Male. Uniform black, with a satiny lustre, very finely punctured. Head broad, 

 flattened, front edge straiglit, or very slightly emarginate, canthus before the eyes 

 broad, but very narrow round them ; spine behind the eyes rounded or pointed, head 

 much narrowed behind ; prothorax short, broader than the head, strongly emarginate 

 on each side in front, the sides straight and oblique as far as tlie middle spine, which is 

 rounded off; hind margin strongly waved; prosternal process strongly developed, 

 straight, and inclining downwards ; elytra narrower than the prothorax, moderately 

 convex ; front tibiae long and straight, with two or three slender spines on the outer 

 side above the slender apical fork. 



Maiulihles. 



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

 and slender, forked at the tip, with three small teeth on the front branch and a long 

 simple hinder one. Front margin of the head straight and slightly swollen ; epistoma 

 broad, triangular. Head rather convex, with large course pits on the sides behind 

 the eyes. Kim of the prothorax beneath conspicuously wrinkled (fig. 1). Two 

 specimens. 



2. Forma mcsodonta. — Mandibles as long as the head, and strongly curved, with four 

 or five teeth at the tip, followed by a middle tooth projecting downwards, which is 

 obtusely conical, and a similar one near the base. Head more flattened, front margin 

 not swollen, but somewhat emarginate, and without the pits behind the eyes. Rim of 

 the thorax beneath slightly or not at all sculptured (var. Iklentata, fig. 2). Two 

 specimens. 



3. Forma ampModonta. — Mandibles broader, flattened, with five teeth at the tip, and 

 an obtuse one at the base. One specimen. 



4. Forma priodonta (fig. 3). — Mandibles shorter than the head, rather flattened, with 

 six or seven crowded teeth, without gaps. Front edge strongly emarginate, witli 

 triangular epistoma above the closed mandibles. Three specimens. 



Female. Resembles the females of 0. (jnzdla and 0. latipennis ; uniform black, except 

 the elytra. Head flattened, coarsely granulated in front only ; canthus broad ; pro- 

 thorax flattened, very broad, sides somewhat curved as far as the middle spine, and not 

 indented beyond; elytra broad, oval, flattened, bicolorous, straw-coloured, with a broad 

 black mark beginning at the shoulders and not narrowing much towards the tip, where 

 it unites with the narrow black margin; rim of the elytra black beneath; front tibioe 

 broad, slightly curved inwards, and with four or five spines on the outer side above the 

 slightly developed terminal fork ; four hind tibiee straight, and less strongly incurved 

 than in 0. gazella. 



Number of specimens examined: eleven males and three females, in the collections 

 of Messrs. Parry and van Lansberge and of the Jardin des Plantes &c. 



Ealitat. Celebes (Menado), collected by Mr. A. R. Wallace. 



