IN THE EASTERN ARCHIPELAGO. 173 



represented in Ceylon. Frequenting dark-coloured tree-stems, 

 I observed (and secured) some fine specimens of flocks of 

 Anmosia decora. It has a curious habit of settling high up, 

 then running down the trunk, stopping at intervals flapping its 

 wings ; then flj'ing off to a neighbouring stem to perform the 

 same manoeuvres. A few miles from Hoodjoong I captured 

 the Eusemia helangeri spread out on broad leaves of Scita- 

 minew. It emits a powerful odour of cloves. Several species 

 of lepidoptera mimic members of the Agaristidse, but I did 

 not discover here if Eusemia helangeri had a double. From 

 the island of Nias (on the west coast of Sumatra) Mr. Butler 

 has recently described {Ann. and Mag. of Nat. Hist., July 1884) 

 a moth, a species of Euschemidse {Panoethia timulans) which 

 mimics Ophthalmis deeipiens (of the Agaristidm) ; while in 

 Amboina, Ophthalmis lincea (which belongs to the same family) 

 is mimicked by Artaxa simulans (of the Liparidx). 

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