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 south-eastwards to Timor ; we 

 also have one example from Amboina. 



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

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

 T. lihythea-=rubella = hainana : the latter has the fringes 

 rosy and the border of the secondaries reduced to triangular 

 spots; in the intermediate form these spots are confluent ia 

 the male, forming a dentated border *. 



4. Terias zoraide. 



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



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



(1867). 

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

 Terias immaculuta, Miskin, P. K. Soc. Queensl, vi. p. 258 (1889). 



Ranges from Bourou southwards to Australia. 



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

 culata the dry. 



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

 best placed in this group, 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) ; riiibner 

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



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

 Archipelago and Andamans, Malacca, Java, and Borneo, 

 eastwards to the Celebes. 



The name T.formosa was probably first given to Hiibner'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 has a slightly narrower border to the primaries than 

 T. libythea. 



