BUTTERFLIES OF BORNEO. Ill 



The habitat of the last two species is extremely 

 doubtful, in fact the only locality quoted for E. gandava 

 is " 0,072 meter," E. gopia may possibly be from the 

 Malay Peninsula. E. magnolia is a Kina Balu species 

 and E. asoko, Feld. has been wrongly recorded from 

 Borneo as it has been confused with E. vacillaria. The 

 remaining three species are found in Sarawak ; speci- 

 mens of all three have been taken at various times of 

 the year at and around KuchiDg and in my opinion the 

 species can be readily distinguished one from the other. 



Examples of both sexes of the three species have been 

 sent to the late Mr. L. de Niceville, to Herr Fruhs- 

 torfer and have been compared with specimens in the 

 British Museum (Natural History) named and as 

 arranged by Dr. A. L. Butler ; although I have not in- 

 variably found myself in accord with the opinions of 

 these distinguished lepidopterists I am none the less 

 deeply indebted to them for their valuable information 

 and I have not found it impossible to reconcile their 

 rather diverse opinions with what I consider to be the 

 facts of the case. 



Euthalla vacillaria, Butl. was described in 1868 from 

 a female only, the male has never been described al- 

 though male specimens agreeing exactly with male 

 specimens in the Sarawak Museum collection stand under 

 the name vacillaria in the British Museum collection. 

 A description of the male follows : — Upper side — Very 

 like the male of Euthalia ambalika, Moore, but the apex 

 of the fore wing is distinctly falcate, the pale blue fascia 

 of the forewing is narrow and ends, as a rule, just below 

 the lowest sub-costal nervule, on the hind -wing above, 

 below the costal nervure is a large patch of black andro- 

 conial scales, Underside, dull brown ochreous, the margin 

 of the forewing from just below the apex to the second 

 median nervule lilacine grey — Expanse 60 mm. 



The falcate forewing and the large patch of andro- 

 conial scales are the salient features of this species. This 



E. A. Soc, No. 45, 1905. 



