156 LUCANiD^. 



species occurs. In the ty})ical giraffa phase, wliich is i'uimd 

 in Southern China, Assam, the Malay Peninsula and Java, 

 one of the teeth towards the end of the mandible becomes 

 larger than the rest and the terminal part acquires a strong 

 curvature (bouvieri stage). In well-developed males tliis 

 tooth forms a very long transverse process and the mandible 

 is rather strongly bent inward at the pouit at which the tootii 

 is situated, the two teeth on opposite sides overlappmg in the 

 closed position of the mandibles. 



In the phase called arrowi by Gravel}^, which occurs in the 

 United Provinces, the Darjeeling district and Sikkim, and also 

 in Central China and Tonkin, the mandibles are very slender 

 and very gently and evenly curved ; the teeth are numerous, 

 but very minute, the hrst one, which is placed ahnost halfway 

 along the mandible, rather more strongly developed than the 

 rest. 



(^. Length (with mandibles), 37-95 mm. ; (without man- 

 dibles) 30-60 mm. : breadth, 13-26 mm, 



$. Length, 39-42 mm. ; breadth, 15-18 mm. 



Giraffa phase. 



A.S.SAM : Kliasi Hills, Shillong, Cherrajjunji. Tekassekim. 

 Andaman Is. M.\lay Peninsula. Java. 



Arrowi phase. 



United Provinces : Lansdowne Garhwal [A. G. Lyell, Oct.). 

 Bengal : Darjeeling ; Pedong {L. Dnrel) ; Peshoke Spur 

 {R. S. Lister) ; Singla, 1500 ft. {Seebs, July). C. China : 

 Hunan {Miss K. V. Ryley). Tonkin : Hoabinh [A. de Cooman). 



Type unknown ; that of confucius Hope in the British 

 Museum, that of arrowi Gravely, in the Indian Museum, 

 Calcutta and that of bouvieri in Dr. Didier's collection. 



Although the difference between large specimens of the two 

 phases is striking, females and small males are not distinguish- 

 able. Dr. Gravely described arrowi as a distinct species and 

 stated that its female had the head very finely punctui-ed, 

 the front angles of the pronotum scarcely truncated and the 

 end of the front tibia slender and bispinose. I have examined 

 the specimen in the Calcutta IVIuscum which he apjiears to have 

 liad before liim at the time of writing and liave found that it is 

 a female oi Dorcus ivestivoodi Parry. 



80. Dorcus politus. (Plate IX, fig. 7.) 



Cladognat/iN.'i politus Parry,* Proc. Ent. Soc. Lond., 1862, p. 110 ; 

 Trans. Ent. Soo. Lond. 1864, p. 21, pi. 10, fig. 5. 



Deep reddisli-browji, with the scuteUum, the margins of the 

 head, ])i()n()tum and elytra, the anteimae, knees, tarsi and jiarts 

 of the lower surface l)lack. Compact, broad and convex, and 

 very smooth and shining a.l)()ve. The eyes small. The legs not 



