213 



THREE NEW SPECIES OF NYMPHALIN^ FROM SIAM. 

 By Percy I. Lathy. 



Terinos falcipennis, sp. nov. 



<y . Upper side : Fore wing rich violet, with brown velvety patch, 

 as in T. clarism, Boistl. ; apex velvety brown. Hind wing rich violet, 

 with velvety brown apical patch and brown costal border ; outer mar- 

 gin dull ochraeeous, as in T. fubninans, Butl., but almost without 

 violet reflections, and containing two rows of obscure blackish lunules, 

 which are most pronounced at anal angle. Under side : Fore wing 

 olive-brown, with faint blue reflections about basal half ; a dark brown 

 spot below costa, and near apex outwardly bordered with whitish. 

 Hind wing olive-brown, with bluish reflections on outer margin ; a 

 conspicuous white bar beyond cell, just beyond this a series of five 

 brown spots between the nervules, two above and three below white 

 bar, and beyond these a series of six obscure ochreous lunules. 

 Exp. 84 mm. 



Four males. In coll. H. J. Adams. 



This species was originally described and figured by De Nice- 

 ville, Butt. Ind. vol. ii. p. 39, t. xxiii. f. 101, from a single male 

 obtained by Captain Bingham in Upper Tenasserim ; owing to 

 want of material it was treated by him as T. clarissa, Boisd. 

 The four specimens from Siam agree pretty well with the descrip- 

 tion and figure of the Tenasserim example, and are, I think, 

 sufficiently distinct from the Bornean T. clarissa to rank as a 

 local race, and receive a name. 



T. falcipennis may be distinguished from T. clarissa by its 

 more falcate fore wings, the more produced tail, and the much 

 more obscure inner row of lunules of hind wings ; on the under 

 side by the obscurity of all its markings, with the exception of 

 white bar beyond cell. 



From T. fubninans, Butl., it differs in the richer violet of 

 upper side, and below in same way as from T. clarissa. 



Penthema mimetica, sp. nov. 



? . Upper side : Fore wing dark brown, strongly glossed with 

 purplish blue, except on outer margin ; an obscure whitish sub- 

 marginal spot between middle and lower median nervules, and a 

 geminate white spot at anal angle. Hind wing dark brown, basal 

 half glossed with purple ; a discal row of seven oval and a sub- 

 marginal row of eight more or less sagittate white spots, the three 

 posterior ones being confluent with those in the discal row ; the sub- 

 marginal spots outwardly bordered with dark brown ; a whitish patch 

 on inner margin near anal angle ; cilia white between nervules. 

 Under side : Fore wing purplish brown at base, paler towards outer 

 margin ; a purple spot at lower end of, and a row of six purple spots 

 beyond cell, of which the fourth, counting from the costa, is much 

 nearer cell than the others ; beyond these a series of six small white- 



