192 LUCANID.E. 



(^. Length (with mandibles), 43-71 mm. ; (without man- 

 dibles) 40-55 mm. : breadth, 19-25 mm. 



o. Length, 36-42 mm. ; breadth, 18-19 mm. 



Darjeeling Distr. : Kurseong ; Gopaldhara, Rungbong 

 Valley [H. Stevens). Assam : Cherrapunji, Khasi Hills 

 {Col. Buckley); Manipur {W. Doherty). Burma: Bhamo 

 {T. Selkirk) ; Nam Tami Valley' (R. J. H. Kaulbach, Sept.) ; 

 Kachin Cauri (L. Fea). 



Type in the Hope Department, Oxford University Museum. 



In the var. alticola the black sutural stripe in the male is wider 

 than in the typical form, resembling that of the female, but 

 the latter also shows some increase of the black pigment. 



Type in the Oberthiir collection. 



104. Calcodes delesserti. (Plate XVII, figs. 1, 4.) 



Lucanus bicolor var. delesserti Guer., Delessert's Souvenir d'un 

 Voyage dans ITnde, ii, 1839, p. 40, pi. 12, fig. 3. 



Odontolabis delesserti Leuthner, Trans. Zool. Soc. Lond. 1885, 

 p. 454, pi. 92, figs. 1-4. 



Black, with the elytra pale yellow, except a common black 

 sutural stripe, narrow upon the posterior half, dilating grad- 

 ually upon the anterior half and forming a triangle, the base 

 of which extends from shoulder to shoulder. 



$. The common sutural black patch forms a triangle 

 occupying the entire basal margin and tapering evenly to the 

 apex, its sides concave. The upper surface is shining, with the 

 exception of the head, which is very coarsely and in front very 

 densely punctured, and the sides of the pronotum, which are 

 very finely granular, the remainder of its surface bemg finely 

 and sparsely punctured. The front angles of the pronotum are 

 very blunt, the lateral angulation is rather sharp and the hind 

 angles are also sharp. The elytra are rather closely punctured 

 but more shining than those of the male. The prosternuni is 

 usually blunt behind. 



(^. The common black sutural i)atch forms a triangle upon 

 the anterior half of the elytra and is continued as a narrow 

 sutural border to the apex. The head and pronotum are 

 densely granular and opaque, but rather less so at the middle 

 of the latter, and the elytra are not very shining. The head 

 bears a ftiirly strong process behind each eye. The front angles 

 of the pronotum are produced but not very sharp, the lateral 

 angulation forms a shar]) spine and tlie hind angles are acutely 

 produced. The prosternal process is produced obliquely 

 downward. The front tibia is slender and has only one or two 

 minute s]Mnes at the outer edge. 



Variation of the male. — Inconstant phase. Small specimens 

 have the mandibles not longer than the head, straight, except 

 their curved tips, and unevenly toothed from the base almost 



