8 Dr. F. A. Dixey on 



country, and probably in the Toro district, was commented 

 on by me in Trans. Ent. Soc. Lond., 1908, p. 569. I may 

 here be allowed to mention that the statements there made 

 had reference to the present form of Nychitona only, and 

 not, as has been supposed, to other forms, such as that 

 named immaculata by Aurivillius, more or less closely 

 resembling it. 



4. Hesperocharis longstaffl, subsp. n. (Plate II, figs. 1-4.) 



(J. Exp. al. 52 mm. Upperside. Fore-wings very pale 

 chrome yellow, passing gradually into pale ochreous at the apex. 

 Fuscous scales form a very narrow edging to the costa, and are 

 collected about the marginal terminations of the subcostal and 

 median branches, and of both radial veins, appearing in this situation 

 as a series of small ill-defined triangular spots, fused at the apex 

 of the wing by their bases, and diminishing in size along the posterior 

 border; a fuscous line, belonging partly to the fringe, extends 

 from the apex to the termination of the first median branch. Hind- 

 wing, pale ochreous like the apex of the fore-wing, becoming lighter 

 towards the costa and deepening slightly towards the hind and 

 inner margin. Anal angle somewhat prolonged. 



Underside. Fore-wings dead white; apex pronounced yellow 

 ochre. A very slight fuscous edging to the outer two-thirds of the 

 costa, prolonged for a short distance round the apex. A small, 

 ill-defined fuscous spot on the costa, just j^roximal to the origin of 

 the second branch of the subcostal. Hind-wings, rich yellow ochre, 

 deepening on the costa, which is narrowly edged with fuscous through- 

 out its whole extent except a very small portion near the body. 

 A series of four fuscous spots runs almost parallel with the costal 

 and hind margin, the first two actually on the costa, the third 

 barely touching it, and the fourth a little distance inwards from 

 the hind border. These spots, which have a purplish tinge from 

 contrast with the general yellow of the wing, are situated respectively 

 on each side of the costal vein, in the interspace between the two 

 branches of the subcostal, and in that between the lower subcostal 

 and radial. The first two are the most intense in colour, the fourth 

 distinctly fainter, the second and third are the largest. There is a 



