260 
THE BUTTERFLIES OF BORNEO. 
Genus 53, Euthalia, Hiibn. 
The Bornean species come under the following subgenera 
a. Cells of both wings open. 
b. Precostal of hind wing straight, bifurcate . Cynitia. 
b 1 . Precostal curved, single ..... Euthalia . 
a 1 . Cell of both wings closed; in the hind wing the 
discocellular is sometimes barely perceptible . Dophla. 
a 2 . Cell of fore wing closed, hind wing open . . Adolias. 
Subgen. Cynitia, Snell. 
a. Males black, margined with light blue; a light 
frictional patch on fore wing below. Females 
with dull hyaline spots on fore wing, no white 
spotted bands ...... 201 .vacillaria.* 
a 1 . Males black, margined with light blue; without 
frictional patch on fore wing below. Females 
with white spotted postmedian bands, no dull 
hyaline spots ...... 202. ambaliha .f 
* A female form characterized by a complete light-coloured band on the 
hind wing is called arama, Fruhst. 
f The males vary above in the pale blue or violet blue of the marginal 
border, which also varies in extent: almost absent in fore wing of some 
specimens, quite narrow or broad to anal angle of fore wing, reaching apex 
of fore wing in some or not in others. Beneath, the colouring varies from 
oclireous to rufous or violaceous-brown. 
The female forms may be separated thus :— 
a. White hind marginal spots of fore wing above 
well-developed ...... 
a 1 . White spots of fore wing confluent 
a 2 . No white spots on fore wing .... 
a 8 . Fore wing with small, well separated white 
spots beyond cell, and hind wing with broad 
violet-blue band ...... 
a 4 . Fore wing with white postmedian spots well- 
developed, violet band of hind wing absent or 
obsolescent. 
a 6 . Hind wing with broad violet-blue band ; fore 
wing spots well-developed, but often dusted 
with brown ....... 
a 6 . Hind wing with but faint traces of white 
median spots. 
2 f. tiara Fruhst. 
2 f. trilobita Fruhst. 
2 f. paramitra Fruhst. 
2 f. magnolia Stand. 
2 f. typica . 
2 f. diardi Yoll. 
2 f. martini Fruhst. 
Two more forms are recorded by Fruhstorfer : gandarva Yoll., which 
seems to be a transition between the last three, and colorata Fruhst., 
which is a pale-brown form of martini. Some Sarawak specimens seem to 
be rather too dark for this, and, at same time, a little light for martini. 
