354 COKAL AND ATOLLS 



inermis, native name, Ampol ; it is green, but in its last skin 

 it frequently becomes putty- coloured. When fed in the dark 

 the last skin is almost, invariably brown. A month is passed 

 in the pupa. This species occurs on Christmas Island. 



Geometrid^. 



(18) Chloroclystis tenuilinea, Warr. 



Not uncommon in June and August. The larva is green, 

 with darker markings, and is slightly hairy. Feeds on the 

 sticky flowers of Pisonia, and pupates among them. 



Pyralid^. 



(19) Pyralis manihotalis, Guer. 

 Not at all plentiful. 



(20) Melissoblaptes, sp. 



Very abundant on all the islands of the group. 



(21) ZiNCKERNiA fascialis. Cram. 



Always common. This widely distributed species also 

 occurs on Christmas Island. 



(22) Marasmia venihalis, Walk. 



One of the commonest insects. Appears in June, and is 

 always to be found about the station lamps. 



(23) Crocidolomia binotalis, Zell. 

 Only a few examples met with in June. 



(24) Pachyzancla licarsisalts, Walk. 



Abundant from June to August. The larva is green, with 

 minute black spots ; it feeds on the leaves and flowers of 

 Diclipterci hurmanni, Nees. It pupates in the spun-up leaves, 

 and the pupal stage lasts for fourteen days. 



(25) Pachyzancla stultalis. Walk. 

 Abundant in June on all the islands. 



