254 Memoirs of the Indian Museum. [Voi,. Ill, 



I have also seen specimens from Buxa (Duars) in Mr. Andrewes' collection ; one 

 from Silonbari at the base of the Lakhimpur hills in Mr. Stevens' collection; and 

 specimens in the Dehra Dun collection from Kochugarh, Goalpara District, 14-V-06; 

 Kapti, Chittagong Hill Tracts; and Chaduar, Assam, g-iv-oô. In the last-named 

 collection there is also a specimen said to be from Mussoorie, but as the label also bears 

 the name Lucanus lunifer it has probably been transferred from another insect. 

 This somewhat improbable locality must, therefore, be ignored. 



Description — Length 19-5-37 mm. Labrum punctured and hairy, anterior margin 

 more or less concave, angles more or less rounded or acute ; sides strongly convex or 

 almost straight, their general direction parallel, or slightly convergent behind. Man- 

 dibles strongly angular on outer side ; upper tooth well developed ; lowest terminal tooth 

 somewhat smaller than and posterior to the other two ; anterior lower tooth double, 

 its anterior part long and sharply pointed in unworn specimens, the posterior part 

 extending backwards as a narrow and more or less bilobed ridge, less completely 

 separated from the former on the right side than on the left, and much more extensive 

 in large than in small specimens — in the latter it may be obsolete. Mentum with some 

 large punctures outside, and in front of, a pair of V-shaped, crescentic, or almost cir- 

 cular scars. Head distinctly marked with round punctures which may be replaced 

 in the anterior half by an obscure longitudinal rugosity ; frontal area very variable 

 in form (compare figs. 526-c), usually traversed by a more or less distinct median 

 ridge ; distance between two inner tubercles on an average about equal to that 

 between these tubercles and the outer ones, the latter being, situated about half way 

 between the former and the anterior angles of the head; the exact proportions 

 between these distances depends on the shape of the frontal area ; even when this is 

 at its broadest, the distance between the inner tubercles is scarcely twice as great as 

 that between the inner and outer tubercles ; median tubercle distinct, obscure, or 

 obsolete ; end of canthus narrow, rounded or abruptly truncate, prominent in large 

 specimens but as a rule not in small ones; parietal ridges short, not extending to the 

 supra-orbital ridges. Pronotum smooth and highly polished above; thickly punc- 

 tured at the sides, especially in the anterior angles and the neighbourhood of the scars ; 

 median groove strongly developed. Lateral plates of lower side of prothorax more or 

 less punctured in front of the coxae, unpunctured behind. Prosternum smooth and 

 highly polished between and behind coxae, keel sometimes strongly grooved trans- 

 versely in front, anterior median semicircular area dull and radially grooved, lateral 

 areas finely punctured behind with a row of hair along their posterior margins. 

 Scutellum with usual median hairy patch on anterior margin, otherwise smooth 

 and highly polished; mesothoracic episterna strongly punctured above and along 

 anterior margin; mesosternum smooth and highly polished, except in lateral angles 

 which are dull, and in scars which are often finely roughened ; these scars do not 

 extend to the posterior margin of the sternum; they are very sharply defined on 

 the inner side, and often also (to a less degree) on the outer side, which does not 

 always coincide with the outer margin of the sternum ; a few punctures sometimes 

 present behind the scars. Central area of metasternum polished, very sharply defined, 



