3*2 
LEPIDOPTERA IN DIG A. 
Habitat. —Sikkim; Bl.otan ; Assam; Clierra Pungi; Khasias ; Manipur; 
Burma; Upper Tenasserim. 
Distribution. —Mr. H. J. Elwes records it as “not uncommon in Sikkim, in 
certain places, up to 4,000 feet elevation, from May to October ” (Tr. Ent. Soc. 1888, 
414). We possess both sexes from Bhotan. Col. C. Swinhoe observes “common 
in the Kliasia Hills” (Tr. Ent. Soc. 1893, 308). Specimens from Manipur, taken by 
Dr. G. Watt, are in the British Museum. Col. C. H. E. Adamson writes, “ this is a 
rare butterfly in Burma. I have only seen one specimen, which I captured in April 
at Tounggya Sekkan ” (List, p. 42). Mr. T. A. Hauxwell obtained “ a single male 
on the Taungoo Hills, 4,000 feet elevation, in May, and since this another in the 
Chindwin Yalley” (J. Bombay N. H. S. 1899, 334). Col. C. T. Bingham has a 
single specimen, taken at Taungjah, Daunat Range in April. Capt. E. Y. Watson 
obtained two specimens in the Chin Hills, 3,000 feet elevation in the rainy season ” 
(J. Bombay N. H. S. 1897, 671). Dr. Leonardo Fea took it in the Karen Hills, in 
August. 
Indo-Malayan and China Species. 
Dercas Verhuellii (Colias Verhuellii, Van der Hoeven, Tijd. voor Nat. Gescli. en 
Phys. v. p. 341, pi. 8, fig. 3, 3a ? (1839). Dercas Verhuellii, Frulistorfer, Dents. 
Ent. Zeit. Iris, 1902, p. 275 ; id, Soc. Ent. 1903, p. 25. Forewing with the apical 
patch in both sexes longitudinally longer and transversely narrower than in 
D, Doubleclayi, Habitat . S. China ; Hongkong. 
Dercas Slcertchlyi , de Niceville, Ann. Nat. Hist. 1898, p. 481, 3 ?. “Differs 
from Verhuellii , in the forewing lacking on both surfaces the large apical patch. In 
Skertchhji the costa from about the middle to the apex of the wing, and thence as 
far as the termination of the first median nervule, has a narrow black border of about 
equal breadth throughout. Otherwise the two species do not differ. This cannot be 
a seasonal form of Verhuellii, as both species fly together in Hongkong in May, 
which is the only month in which Mr. E. F. Skertchly has obtained it. It seems to 
be fairly common in the Island.” Habitat. Hongkong. 
Dercas difformis , de Niceville, Ann. Nat. Hist. 1898, p. 483, 3 9. Sen, 
D. Wallichii, Leech, Butt, of China, &c. p. 445, pi. 35, fig. 3 3 (1893). D. Enara, 
Swinhoe, Ann. Nat. Hist. 1899, p. 107, 3 ?. Habitat, C. and W. China. 
Dercas Gobrias (Gonepteryx Gobrius, Hewitson, Trans. Ent. Soc. 1864, p. 246, 
pi. 16, fig. 1 3 . Butler, Pr. Zool. Soc. 1865, p. 132, pi. 25, fig. 4 3. Vollenhoven, 
Mon. Pieridae, p. 63 (1865). Druce, P. Z. S. 1873, p. 356. Dercas Gobrias, 
Wallace, Tr. Ent. Soc. 1867, p. 398. Distant. Rhop. Malay, p. 308, pi. 26, fig. 18 3 
(1885) ; id, Ann. Nat. Hist. 1887, p. 271. de Niceville, Journ. As. Soc. Bengal, 1896, 
p. 500; id, Ann. Nat. Hist. 1898, p. 481. Habitat . Malay Peninsula; Sumatra; 
Borneo; ? Java. 
