of undescribed Lucanidce. 49 



The $ differs little from the $ except in the smaller size, and 

 less quadrate shape of the head, and in the shorter mandibles, 

 which have but little inclination upwards, and furnished internally 

 but with two teeth. 



A very nearly allied species to this (0. castanopterus) occurs in 

 India, but differs in having the mandibles not so long, and nearly 

 horizontal, as well as in the shining surface of the elytra, and in 

 the colour of the same being bright chesnut. 



Length 1-^"^ inch. 



Sp. 5. Odontolabris emarginatus, Reiche, MSS. (PI. Ill, figs. 4 & 5.) 



Black. $ with the head transverse, subquadrate, ernarginate in 

 front, with a strong blunt tooth on each side behind the eyes, 

 convex above, opaque, finely granulated. Eyes crossed horizon- 

 tally, with a narrow sharp ridge projecting from the forepart of 

 the head. Mandibles, when fully developed, nearly as long as 

 the head and thorax, strongly bowed inwards, forming wlien 

 closed the shape of a circle or blunt oval, nearly of equal size 

 throughout their length, with one stout blunt tooth at the base ; 

 the apex truncate, and having four minute teeth in the trun- 

 cated portion. Antennae rather long and expanded. Thorax 

 somewhat broader than the head, subquadrate, transverse, rather 

 broader posteriorly, the lateral margins smooth, the anterior mar- 

 gin curving forwards in the centre, and the hinder margin curved 

 in the opposite direction, and having a shallow notch just before 

 the hinder angles ; convex above, very finely granulated, opaque. 

 Scutellum minute, siibtriangular. Elytra of the same breadth as 

 the thorax, semi-ovate, with the lateral margins slightly reflexed, 

 and with the upper surface convex, very finely punctato-granulate 

 and opaque. Legs rather long, with the fore tibite flattened and 

 expanded at the apex, armed externally with a row of about seven 

 small equidistant teeth on the outer margin ; middle and posterior 

 tibiae subcylindrical, with a longitudinal broad furrow on the 

 upper side, and only armed with a single tooth at the apex. Un- 

 derside of body rather shining; abdomen pitchy brown. 



$ scarcely differing from the cj , except in being smaller, and 

 in the shape of the mandibles, which are short, stout, about as 

 long as the head, nearly straight, slightly incurved at the apex, 

 and armed internally with a row of seven or eight small irregular 

 blunt teeth. 



Length, $, large specimen, 1^''^^ inches(mandibles -^g) ; small 

 specimen, Ijq- $ li^ij- 



A neat and well-marked species. The $ varies much in the 



VOL. III. N. S. r.VRT II. OCT. 1 85 1-. E 



