Forms of South- African Butterflies. 71 



markings (more distinct in $ ), throughout the hind-wings. 

 D. inimaculata is of a paler ochreous-yellow than D. millari 

 and is quite devoid of markings on both surfaces of the 

 wings. 



The nearest ally of D. millari is D. oehrascens (Neave), 

 a native of Usemi and Kisumu, Kavirondo Bay, N.E. shore 

 of Victoria Nyanza, but it differs on the upper-side in 

 having the dark border of the fore-wing, though rather 

 narrower apically, prolonged to posterior angle, and in 

 presenting also in the hind-wing a similar but more even 

 dark border from before apex throughout hind-margin to 

 anal angle. On the under-side, too, D. oehrascens presents 

 a more uniform ground-colour, but with the discal series of 

 spots paler and better defined in the hind-wing. 



The existence of this notable addition to the LyciGnidm 

 of the South-African Sub-Region was made known to me 

 in November 1902, by Mr. A. D, Millar, who sent me a 

 coloured sketch by Mr, G. W, Jeffery of Durban, Natal, of 

 a single specimen taken by the latter, on 14th September, 

 1902, on the Bluff ridge overlooking the town of Durban. 

 Though the sketch evidently represented some apparently 

 undescribed form, it did not give the structural details 

 necessary to determine the genus of a butterfly ; but I was 

 supported by both Mr. W, F, Kirby and Prof, Chr. 

 Aurivillius in the view that the species depicted was new, 

 and might prove to constitute a new genus. Mr. Jeffery 

 noted that the example in question was "flitting about 

 from leaf to leaf on a shrub about twelve feet in height ; 

 the day was exceedingly windy, so perhaps the insect 

 might have been brought for some distance by the wind;" 

 and he adds that he soon after revisited the locality, and 

 spent a whole day there, but did not meet with another 

 example. 



Not until August last had I the pleasure of receiving 

 from Mr, A. P, Millar both Mr. Jeffery's original specimen, 

 and a second captured by himself, with some other 

 examples, in May 1905. It was at once clear that the 

 butterfly was a Deloneura, but both examples being male, 

 it seemed possible that they might be that sex of the 

 exceedingly rare D. immaculata. Mr, Millar, on my 

 representing how things stood, most kindly found and 

 sent me a female, which is described above, and which 

 satisfactorily establishes the form as a distinct species of 

 the ofenus. 



