Lepidoptera of Sikkim. 365 
several forms have been separated by Moore, which may 
not be really distinct. One of them is— 
S. cotanda, Moore, P. Z. 8., 1874, p. 569, t. Ixvi., fig. 9, 
3; Butt. Ind., ii., p. 242.—I have seen nothing from 
Sikkim, whence the type came, which quite resembles 
the plate, and agree with de Nicéville that it is hardly 
a good species. 
200. Symbrenthia niphanda. 
Symbrenthia niphanda, Moore, ‘P.Z.S., 1872, p. 559; 
Butt. Ind., ii., p. 2438. 
This is rare at low elevations, about 3 to 5000 ft. from 
March to October, and seems quite distinct from hypselis, 
as well as from silana. On the upper side, however, it 
most resembles hippoclus. 
201. Symbrenthia silana. 
Symbrenthia silana, de Nicé., J.A.S.B., 1885, pt. 1i., 
p. 117, t. i, fig. 9, 3 ; Butts Inds; 1.,.p: 243. 
This is also rare and local at about 2000 ft. elevation, 
where Maller has hitherto only procured it in May. It 
is easily distinguished by the broad pale fawn-coloured 
bands. It has also been taken at Buxa. The females 
in these two last species resemble the males more 
closely than is the case with S. hippoclus and S. hypselis. 
202. Cyrestis cocles. 
Papilio cocles, Fabr., Mant. Ins., ii., p. 7 (1787); Don., 
Ins. Ind., t. xxiii., 2 (1800). 
Cyrestis cocles, Butt. Ind., i., p. 254. 
A single male of this species was taken in the spring 
of 1887 by Méller’s men at low elevation, the first, as 
far as I know, which has been recorded from Sikkim. 
203. Cyrestis thyodamas. 
Cyrestis thyodamas, Boisd., Cuv. Reg. An. In, vol. ii., 
t. exxxviii., fig. 4 (1836) ; Butt. Ind., ii., p. 251. 
Amathusia ganescha, Koll., Hugel’s Kash., p. 480, 
t. vil., 3, 4 (1848). 
Common up to about 6000 ft. from March to December. 
TRANS. ENT. SOC. LOND. 1888.—PaRT I. (OcT.) 2C 
