New Species and Subspecies of Pierinae. 7 



Among the African forms of the genus Nychitona, Butl., 

 {Leptosia, Auriv.), there is a race or subspecies first known 

 to me by four specimens from the region of the Victoria 

 Nyanza, presented to the Hope Collection by Mr. C. A. 

 Wiggins. The series consists of two males from the Toro 

 country on the eastern slopes of Ruwenzori, captured by 

 natives in November or December 1900 ; and two females, one 

 captured by Mr. Wiggins at Entebbe on the N.W. shore of 

 the lake on April 8, 1903, and the other caught by a native 

 in the Ugaia country, south of the Kavirondo gulf, in January 

 1903. These specimens differ in some respects from all 

 forms of Nychitona hitherto described, but may be considered 

 as a subspecies of N. medusa, Cram. 



3. Nychitona wigginsi, subsp. n. (Plate III, figs. 9-12.) 



(J. Exp. al. 46 mm. Upperside dead, opaque white, with a 

 very faint greenish -yellow tinge; not semi-translucent as in some 

 other forms of Nychitona. Fore-wings with slight fuscous mottling 

 along the costa, reaching from the body to a point opposite the 

 origin of the first branch of the subcostal. A dark fuscous apical 

 crescentic patch, slightly waved on its inner aspect but not indented 

 as in most other forms of Nychitona, beginning at a point on the 

 costa nearly opposite the origin of the second subcostal branch, and 

 ending on the hind margin in the interspace between the first and 

 second median branches. Hind-wings bordered with a very narrow 

 dark line, the centre of each interspace marked on the border by 

 a minute dark spot. There is no other marking on the upper 

 surface of either fore or hind-wing, but the mottling of the under 

 surface shows faintly through. 



Underside white; a dull green mottling filling the basal half 

 of the cell, and prolonged on the costa as far as the termination of 

 the first subcostal branch. A similar mottling on the apical area 

 corresponds to the dark crescentic patch on the upper surface, and 

 is also found over the whole of the hind-wing. This mottling of 

 the hind-wing is scattered generally over the surface of the wing, 

 and shows little or no tendency to fall into the parallel streaks 

 which are conspicuous in some other forms of Nychitona. 



$. Closely resembles the male in size and aspect. In both sexes 

 the tint and texture of the upper surface give an aspect which 

 is conspicuously different from that of other forms of Nychitona. 



The marked resemblance of this form to the curious 

 Leuceronia pharis, Boisd., which also occurs in the Ugaia 



