224 Mr. A. G. Butler on the Genus Terlas. 



Terias anguligera, sp. n. (PL V. fig. 10.) 



This is the representative of the preceding species at Ton- 

 dano, and differs from it in the much broader outer border to 

 the wings, that of the primaries internally forming five abru])t 

 angles instead of the curves of T. gradiens, the internal border 

 of the primaries also not reaching the base, but tapering off to 

 a point. Under surface with the markings much more strongly 

 defined. Expanse of wings 55 millim. 



Tondano {Wallace). Coll. Hewitson. 



This was labelled " T. eumide " and associated with T. 

 hecahe by Hewitson ; but it is widely distinct from Felder'a 

 species, the description of which refers to a pale sulphur- 

 yellow insect, which we have in the Museum collection from 

 near Macassar. A third species nearer to T. gradiens^ from 

 the Sulla Islands, has been presented to the Museum by Mr. 

 Moore ; it is, however, imperfect. 



Terias Candida group. 



T. celehensis, Wall. ; T. xanthomelcBna, Salv. ; T. Candida, 

 Cram. ; T. puella, Boisd. ; T. virgo, Wall. 



Though connected with the preceding group through T. 

 celebensis and T. tominia, there is at present a slight gap be- 

 tween this group and the next. 



Terias celebensis. Wall. 



The male is perfectly intermediate between that sex of 

 T. tominia and T. xantliomelcena ', the female more closely re- 

 sembles T. tominia. In the Hewitson cabinet are two males 

 apparently of distinct though allied species — one, marked 

 " Mak.," being doubtless the type of Wallace's T. celebensis ^ 

 from Macassar, the other, marked " Sula," being evidently 

 his Sulla-Island specimen. On such slender material it would 

 be rash to separate two closely allied forms from the same 

 district, although there is hardly a living lepidopterist who, 

 in this genus, has not described forms more closely resembling 

 each other. 



Terias nise group. 



T. regularis,'S>Vi\\.\ T. wec?a, Godt. ; T, cequatorialis^Y^M.', 

 T. nise, Cram. ; T. musa, Fabr. ; T. rnana, Boisd. ; T. agave, 

 Cram. ; T. alhida, Cram, j T. ainoe, Godt. ; T. clara, Bates ; 

 T. marginella, Feld. 



In this group the transition from yellow to white species is 

 clearly traceable, though a iQw links are still wanting (in 

 colour only, not in pattern). 



