462 DR. F. LEUTHNER ON THE ODONTOLABINI. 
Mandibles. 
1. Forma telodonta.—Mandibles longer than the head, rounded, moderately curved, 
with four or five small teeth at the tip, behind which is a simple tooth projecting 
downwards; a rudimentary tooth on the upper side at the base; head with strongly 
developed frontal crest (figs. 1, 2). 
2. Forma mesodonta.—Mandibles as long as the head, and strongly curved, rounded, 
with five apical teeth; a strong central tooth curving downwards (with tendency to 
bifurcation) ; base with a rudimentary obtuse tooth (fig. 3) on the upper side near the 
basis. 
3. Forma amphio-mesodonta.—Mandibles as long as the head, broad, sickle-shaped, 
the apical series of teeth not separated from the central teeth ; base with two obtuse 
teeth (fig. 4). 
4. Forma priodonta (irregularis)—Mandibles very short, with irregular teeth; head 
with no spine behind the eye ; prothorax resembling that of female (fig. 5), and spotted 
with yellow on each side, at the front angles, as in the female (fig. 6). 
Female. Very like that of 0. wollastoni and O. ludekingi in the shape of the head 
and thorax, but flatter, shining black, with a round orange-red spot on the front angle 
of the prothorax, both above and below; elytra long, oval, pale straw-coloured, with a 
broad black sutural stripe rapidly narrowing before the tip; borders and the overlapping 
rim black ; under-surface of the abdomen black, with a large pale brown spot on each 
side of the mesosternum; legs black, the underside of the femora with a pale brown 
spot (fig. 6 a, 6). 
Female (variety). There is a small specimen in the Leyden Museum in which the 
yellow spots on the prothorax are wanting, and the black suture is as narrow as in the 
male (fig. 7). 
Number of specimens examined: ten males and four females in the Leyden Museum 
and in Herr van Lansberge’s collection. 
Habitat. Eastern Sumatra. 
Measurements. 
Total length. Head. Mandibles. Prothorax. Elytra. 
millim. millim, millim. millim. millim. 
3. Telodont.... 81 14 by 24 28 11 by 25 32:0 by 25 
MWeagoeodan do Pil 14 ,, 20 23 11 ,, 22 29°0 ,, 22°5 
67 13 ,, 19 24-5 10 ,, 21 28-0 ,, 22 
Type (2) ...eee 45 8 ,, 15 7 10 ,, 20 255 ,, 19°5 
37°5 amet 6 8 ,, 16 23:0 ,, 175 
Vollenhoven described this species from a single male from Sumatra (type in the Leyden 
Museum), and gave a recognizable figure, which, however, is less accurate than it looks, 
The head is broadest in front; but Vollenhoven has represented it as broadest behind, 
