PIEEIN^. 189 



Dry-season form (Plate 539, fig. 2, 2,i, (^ , 21i, c, ? ). 



Primierin Wntsoiii, Hewilson, Trans. Ent. Soc. Lonri. 1868, p. 100, ? . Butler, Proc. Zool. Soc. 1872, 

 p. 28. Moore, Proc. Zool. Soc. 1878, p. 839. Adamsioii, List Burmese Butt. 1897, p. 41. 

 Fruhstorfer, Berl. Eiit. Zeit. 1899, p. 110. 



Prioneris Seta, Wallace, Tians. Ent. Soc. Lond. 1867, p. 384, cJ. 



Mat-e and Female. Smaller m size than the wet-season form. Male. Upper- 

 side similar. Forewing differs in the black apical portions being narrower, and the 

 cell area showing less indications of the dark markings of the underside. Hindiving 

 with a very slender black marginal border only, or, in some, this border is very 

 slightly dentate at the end of the veins ; the yellow colour of the underside being 

 indicated by a delicate flush within the cell and outer interspaces. Underside. Fore- 

 tving similar to the upperside, except that the dark portion is purplish-brown or pale 

 purplish-black, including the upper half of the cell area ; the spots at the apex of 

 the wdng are smaller and yellow, or sometimes obsolescent. Hinclwing with the 

 basal dark portions purplish-brown, the middle of the cell, the basal spot, and outer 

 interspaces being chrome-yellow with white borders, the discal and marginal spots 

 being also confluent within each interspace. 



Female. Upperside white, approximating to the male. Foretving with the cell 

 area and outer veins broadly black bordered ; the cell area with black longitudinal 

 streaks and anteriorly-enclosed white spots. Hindwing with a narrow black marginal 

 den tated band, and a lower discal broad diffused chrome-yellow patch. Underside. 

 Forewing as in the male, except that the cell area is black and enclosing white basal 

 streaks and anterior spots. Hindwing with the basal dark portions and marginal 

 border purple-brown, with chrome-yellow markings, as in the male. 



Expanse, <? 2|- to 3, ? 3 to 3|- inches. 



Larva.— Unknown. 



Habitat. — Sikkim ; Bhotan ; Assam ; Burma ; Upper Tenasserim ; Shan 

 States. 



Distribution. — Mr. H. J. Elwes records "the males not uncommon in Sikkim 

 up to 4,000 or 5,000 feet elevation, throughout the season ; the female rarer. I 

 have also a male from Buxa, Bhotan" {I.e. 410). Mr. L. de Niceville says it is "a 

 common species in Sikkim at elevations below 5,000 feet all through the warm 

 weather. The females are very rare. It is strongly affected by the seasons ; the 

 dry-season form found early in the year has been named Watsoni" (I.e. G6). Col. C. 

 Swinhoe records it as being " common in the Khasia Hills " (I.e. 310). Mr. W. 

 Rothschild possesses specimens of both sexes from " Sadarghat, Assam." Col. 

 C. H. E. Adamson took " three specimens of Thestylis, in March and April, on the 

 Lampha Choung, nearTaoo, Middle Tenasserim, and two of Watsoni in February at 

 Thounggya Sekkan " (List Burm. Butt. 1897, 41). Capt. E, Y. Watson obtained " a 



