DR. F. LEUTHNER ON THE ODONTOLABINI. 463 
from spine to spine, which entirely alters the appearance of the insect. The yellow 
mark on the head is by no means so sharply defined as in the figure, which represents 
it as raised. The prothorax is equally incorrect, being represented as much too broad 
at the base. It is unfortunate, too, that Vollenhoven had an abnormal male of the 
telodont form before him, in which the prothorax was strongly narrowed in front, a 
character which is neither constant nor typical (fig. 2). In normal specimens the 
prothorax resembles that of 0. Judekingi and O. wollastoni. 
This specimen long remained unique; but a short time ago the Leyden Museum 
received seven males and three females. Herr Ritsema, who described the males and 
the previously unknown female, was kind enough to show me his MS. All the speci- 
mens figured on Pl. XCIV. are from the Leyden Museum. The various forms figured 
are exceedingly interesting and instructive, for they show us what considerable variations 
may occur in other parts of the body besides the mandibles. (Compare the head and 
thorax in figs. 1 & 2.) The front tibie in figs. 1 & 2 are rounded, while figs. 3 & 4 
show a slight inward curvature, and a shallow channel on the upper surface’. The 
priodont male (fig. 5) is like the female both in the form of the thorax and in the 
reddish-yellow spots on the front angles, which are so characteristic in the large 
females. The female represented in fig. 7 is equally interesting. The prothorax is 
black, and the elytra are marked as in the male. 
20. ODONTOLABIS GAZELLA, Fabr. (Plate XCVI. figs. 10, 106, 4; fig. 11, 9: compare 
Plate XCI. fig. 6, 2, Fabrician type!) 
9. Lucanus gazella, Fabr. Mant. Ins. i. p. 1 (type in Mus. Banks, B.M.); Ent. Syst. i. p. 238; 
Syst. Eleut. ii. p. 250; Oliv. Ent. i. 1, p. 13, pl. iv. fig. 13 a, 6 (recognizable figure); Herbst, 
Col. ii. p. 313; Thunb. Mém. Soc. Nat. Mose. i. p. 162; Schénh. Syn. Ins. i. 3, p. 324. 
3g. Lucanus bicolor, Oliv. Ent. i. 1, p. 22, pl. v. fig. 20 (recognizable figure); Thunb. Mém. Nat. 
Mose. i. p. 204; Westw. Cab. Or. Ent. p. 53, pl. xxvi. fig. 1 (excellent figure). 
Anoplocnemus bicolor, p., Burm. Handb. Ent. v. p. 360. 
Odontolabis bicolor, Thoms. Ann. Soc. Ent. France (4) ii. p. 395; Parry, Trans. Ent. Soc. Lond. 
(3) ii. p. 77; Cat. Lucan. Col. ed. 3, p. 14. 
Male. Uniform black, with the upper side of the elytra yellowish brown; mandibles 
sickle-shaped, with strong wrinkled punctuation; head flattened, finely punctured ; 
frontal edge but slightly emarginate; canthus very broad, spine behind the eyes 
straight, directed slightly backwards, and obliquely truncated behind; prothorax very 
short and broad, only slightly convex, widened on the sides towards the middle spine, 
and then strongly emarginate; underside smooth; prosternal process well developed, 
oblique, directed backwards. Elytra long, oval, strongly convex, yellowish brown, with 
1 This apparently unimportant modification of form throws a light on those retrograde male forms with 
short mandibles, large heads strongly narrowed behind, a broad prothorax, and curved front tibiz. (Compare 
O. gazella, Fabr., and the other species figured together on Pl. XCVI.) 
