1909. ] FAUNA OF COCOS-KEELING ATOLL. 145 
(3) Hypontmnas BoLina form NERINA Fabr. 
An uncommon species, on the wing in April and August. 
Specimens are in perfect condition, and the species is evidently 
resident. 
(4) Hypotimnas misrppus Linn. 
A common species on all the islands of the group. One worn 
specimen was taken on Christmas Island by Dr. Andrews. The 
males and females of this species are very rarely seen together ; 
the males flying high in the shade of the thiekly growing coco- 
palms, and the female being generally seen flying low over the 
herbage in open spaces. It is abundant from July to October, 
and again from the end of February to April. The larva is 
brown and spiny, the head is reddish and bears two spines. 
Tt feeds on a succulent weed that grows all over the open 
spaces in the atoll. The pupa is brown and has no metallic 
markings ; it issuspended by the tail. Six days are passed in the 
pupal stage. The female mimics Danais (Limnas) chrysippus 
petilia Stoll, and is nearly always seen flying in company with 
that species, whose habits of fluttering over the herbage it has 
closely imitated. The male, on the other hand, flies strongly and 
is not often seen fluttering near to the ground, 
(5) VANESSA KERSHAWI McCoy. (Australian.) 
Only four examples of this species were met with in fifteen 
months, and since all were observed between the 15th and 17th of 
May 1906, it is probable that they were waifs. Two rather worn 
specimens only were captured on Pulu tikus. 
(6) Danais (Lonas) cHRysrppus PEritiA Stoll. (Australian 
& Christmas Id.) 
Common on Pulu luar and Pulu tikus, but not so often met 
with on the other islands. The larva is pale green, banded with 
yellow and black. The food-plant 1s Asclepias curassavica. The 
pupa is suspended by the tail, and is pale green or buff with small 
golden dots. The average stay in the pupa is only 135 hours. 
LEPIDOPTERA HETEROCERA. 
Species determined by Sir Grorce F. Hampson, Bt., F.Z.S. 
ARCTIADZA. 
(1) Urernesa PULCHELLOIDES Hmpsn. 
A very abundant insect on all the islands. It mostly frequents 
the seaward side, for there the food-plant, Tournefortia argentea 
Linn., lives most luxuriantly. The perfect insect, and the larve, 
are to be seen at all times of the year, and season appears to make 
no difference to its numbers. 
Proc. Zoou. Soc.—1909, No. X. 10 
