508 



NEW FORMS OF BUTTERFLIES FROM BURU. 



By J. J. JOICEY, F.Z.S., F.E.S., &c, and G. TALBOT, F.E.S. 



(Numbers 1 to 8 reprinted and amended from " The Entomologist,'" vol. Ivi, 

 pp. 26-28, February, 1923.) 



The forms herein described were collected by the brothers F., C. 

 and J. Pratt, in the Island of Bum during 1922. The types are in the 

 Hill Museum, Witley. 



Family PAPILIONIDAE. 



1. Papilio (Troides) prattorum J. and T., f. mixtum f. nov. 



$ . Shape of wings as in -prattorum. Fore wing with the vein stripes 

 faintly marked on both sides. Hind wing with the base black, but to 

 a less extent than in the helena form ; marginal area more broadly black 

 than in typical prattorum, more especially below vein 6 ; the tooth on 

 vein 4 shortened and dusted with black, this being the only vestige of 

 the black dusting seen in the typical form. The cell of the hind wing 

 is a little broader, somewhat as in helena. Abdomen ventrally with 

 only slight black hair and more yellow scaling. The claspers are grey 

 instead of black, being a little darker than in helena. The yellow area 

 of the hind wing on both sides slightly opalescent. 



Habitat. — South coast of Buru : Lek Soela, February-March, 

 a single specimen. 



This remarkable specimen partakes of the character of both 

 prattorum and P. helena bouruensis Wall. 



Family PIEEIDAE. 



2. Delias prouti sp. nov. (pi. VI, figs. 1, 2). 



$ . Upperside white. Costa and outer margin of fore wing and 

 outer and inner margin of hind wing very narrowly edged with black. 

 Fringes black. Underside of fore wing with black ground-colour, a 

 grey-white basal half, and large apical yellow spots from costa to vein 3. 

 Hind wing with a long brick-red basal stripe in 7 as in joiceyi, the 



