Mr. A. G. Butler on the Genus Terias. 213 



in our present profound ignorance of the earlier stages of 

 most of the species and our imperfect knowledge of those of 

 all, to lay down the law as to wliich of these forms is worthy 

 of a distinctive name and which not. In these matters one 

 can only be guided by private opinion. 



Terias drona group. 



Although the species of this group pass almost impercep- 

 tibly into the T. srnilax group, it is convenient to speak of it 

 as if it were well defined. Of the named forms we possess 

 the following : — 



T. pulchellaj Bolsd. ; T. zoe, HoptF. ; T. senna^ Feld. ; T. 

 lernttj Feld. ; T. zoratde, Feld. ; T. drona, Horsf. ; T. lisa, 

 Boisd. ; T. euterpe, Mdn^tr. ; T. sulplmrina, Poey ; T. lihy- 

 thea, Fabr. ; T. cingala, Moore ; T. santana, Feld. { = ruheUa, 

 Wall.); T. venata, Mooxe ', T. pallitana, Moore; T. ingana, 

 Wall. ; T. Sana, Butl. ; T. sinta, Wall. ; 2\ candace, Feld. ; 

 T. hrigitta, Cram. 



Respecting one or two of the above I have observations to 

 make : — 



Terias senna, Felder. 



Although this species is most abundant in the North- 

 western Provinces of India, there can be no doubt that it is a 

 wide-ranging species ; indeed we have a female from Camorta, 

 and Felder describes the species as coming from the interior 

 of Malacca. Mr. Distant, with the laudable desire of trying 

 to identify it with some known Malaccan species, figures 2\ 

 inanata as representing it ; whereas a careful perusal of 

 Felder's description should convince every candid reader that 

 the two forms are as wide apart as any in the genus. If we 

 set aside the description itself, which states that the external 

 border of the primaries is trisinuate — " the costa and terminal 

 horder hlack-broivn, tolerably hroad, gradually decreasing, 

 entire internally as far as the third median branch, then un- 

 equally bisinuate, before the internal angle more deeply sinU' 

 ated^^ — the remarks at the end of the description are con- 

 clusive : — " From the preceding species {T. santana) easily to 

 be distinguished by its longer, blunter front wings, broader 

 outer border of the latter, and broader marginal limitation of 

 the hind wings." 



Not one of the above-mentioned characters applies to T. 

 inanata, which indeed, as Mr. Distant upon reflection will see, 

 cannot be remotely allied to T. santana. 



