Pierine Butterflies of the Genus Terias. 59 



The range of this species appears to extend from the 

 Himalayas eastwards to Southern China and Hainan, south- 

 wards to Ceylon, and thence sontli-eastwards to Timor ; we 

 also have one example from Amboina. 



The wet form is represented hy T. senna = lerna, the inter- 

 mediate form by T. drona, and the dry form is typical 

 T. libr/thea = ruheUa = hainana: the latter has the fringes 

 rosy and the border of the secondaries reduced to trianguhir 

 spots; in the intermediate form these spots are confluent in 

 the male, forming a dentated border *. 



4. Terias zoraide. 



Terias zoraide, Felder, Eeise der Nov., Lep. ii. p. 213 (1865). 



Terias australis, Wallace, Traus. Eut. Soc. ser. 3, vol. iv. p. 321 



(1867). 

 Terias sinta, Wallace, t. c. p. 322. 

 Terias inwiacuiata, Miskiu, P. 11. Soc. Queeiisl. vi. p. 2.58 (1889). 



Kanges from Bourou southwards to Australia. 



T. australis = zoraide is the wet form; T. sinta=^imrna- 

 culata the dry. 



T. euterjye and T. neda of the New World appear to be 

 best placed in this gi'oup, in spite of the somewhat different 

 character of their under-surface markings. 



T. harina group. 



The wet-season forms differ from the dry in the much 

 greater width of the outer blackish border to the primaries ; 

 between the two seasons this border is intermediate in width. 



5. Terias harina. 



Terias harina, Horsfield, Cat. Lep. E. I. C. p. 137 (1829) ; rilibner, 

 Zutr. exot, Schmett. figs. 979, 980 (1837). 



Ranges from N.E. India through Burma, the Mergui 

 Archipelago and Andaraans, Malacca, Java, and Borneo, 

 eastwards to the Celebes. 



The name T.formosa was probably first given to Htibner's 

 figures of T. harina by the late Adam White, and thus 

 appeared in a list of the species of this genus which I pub- 

 lished (P. Z. S. 1871, p. 540) at a time when I had no 

 perfect copy of Hiibner's work for reference. In that list, 

 oddly enough, I transposed the sexes — the type of T. harina 

 being a female, that of Hiibner's illustrations a male. 



In the Philippines a fairly distinct race occurs, of which 



* T. hainana lias a slightly narrower border to the primaries than 

 T. libythea. 



