On new Butterflies and Moths from the East. 417 



the base of caudal when laid back. Pectoral extending ^-| 

 he distance from its base to origin of ventral. Caudal 

 forked. Caudal peduncle l|-2 as long as deep. Purplish 

 above, silvery below. 



Three specimens^ 118-170 mm. in total length. 



This species is especially distinguished by the rather long- 

 barbels and the slender serrated dorsal ray. 



LVIII. — On some new Butterflies and Moths from the East. 

 By Colonel C. SwiNHOE, M.A., F.L !S., &c. 



Family Euplceidae. 

 1. Betanga moluccana, nov. 



S . Palpi, frons, and head deep black; palpi with a discon- 

 nected white stripe on each side and another behind the eyes ; 

 top of head with two white dots on each side : body and fore 

 wings dark brownish black : hind wings paler and paling- 

 much towards outer margin, the lower portions being much 

 browner; both wings and body without any markings; the 

 costal portion of the hind wings pale and shining, but not 

 whitish, as is usual in tlie species of this genus. Underside 

 uniform blackish brown, the lower portion of fore wings 

 whitish ; spots white, tinged with blue, one at end of cell of 

 fore wings, another above it near the costa, a row of four spots 

 parallel with these, four subniarginal dots rather far from the 

 margin ; an elongated, rather large, pure white spot in the 

 middle of the wing between veins 2 and 3 : hind wings with 

 a spot at the end of cell, a curved series of six spots round it, 

 one close to the costa a little to the outside of the curved 

 series, and a submarginal row of spots, the hinder ones re- 

 duced to mere dots on one wing and some of them obsolete ou 

 the other ; some white spots on the legs. 



Expanse of wings 3t^ inches. 



Obi, Moluccas. 



Nearest to Duponchelii^ Boisd., the sexual brand on the 

 upperside of the fore wings very much shorter and broader, 

 its upper side curved and its outer end acute ; on the under- 

 side the central white spot on the fore wing is a great deal 

 shorter and more rounded. I have had this form in my 

 collection for a long time, and though it has been to Tring 

 and to the British Museum, and I have searched all the 

 literature I can tind on the genus, I have not been able to find 

 that it has ever been described. 



