Mastern Pieridce. 367 



locality on the authority of M. Feisthamel. This is douotless an 

 error, as I took it in Borneo, and it is so closely allied to the T. 

 hippo of Malacca and Sumatra. 



1 1 . Tachyris scyllaria, MacLeay. 



Pieris scyllaria, MacLeay, King's Australia, p. 459 ; rJd. Sp. 



Gen. p. 482. 

 Ilnb. — West Australia. 

 I have not seen a specimen of this species. 



12. Tachyris ada, Cramer. 



Papilio add, Cr. 363 C, D, ^. Pieris ada, Bd. Sp. Gen. p. 479 ; 



Voll. Mon. Pier. p. 41, pi. 5, f. 3, $. 



Pieris cilia, Feld. Voy. Novara, p. 165. 



Sab. — Bouru, Ceram, Amboina, Mysol, Aru Islands, New 

 Guinea (Coll. Wall.). 



This fine species scarcely differs in all the above localities 

 where I myself captured it, Boisduval describes the male well, 

 but errs as to the female, which he had probably never seen. This 

 is well described and figured by Vollenhoven. 



Dr. Felder describes the Aru form as a distinct species, and it 

 certainly presents more marked differences than those of the other 

 localities ; some specimens from Bouru and Ceram approach it 

 very closely, but it is generally larger in size, and in both sexes 

 has much more and deeper coloured rich orange tint in the abdo- 

 minal region beneath; there is also a pale or nearly white spot 

 near the outer angle ; yet these differences seem hardly definite 

 enough to characterize a species. 



13. Tachyris clavis, n. sp. 



Male. — Differs from T. ada only by the rather broader pos- 

 terior band of the hind wings both on the upper and under sur- 

 faces. 



Female. — Above, differs from 2'. ada in the ground colour 

 being white, not at all tinged with yellow or green, but rather 

 bluish, and with a violet shade across the base of the upper and the 

 middle of the under wings, and in the borders being much broader, 

 of a browner colour, and less dentated. Beneath, there are similar 

 differences, the chief being the much larger posterior border on 

 the hind wings, and the basal half being entirely yellow, with 



c c 2 



