the Butterflies of the White Nile. 39 
This species, and the remark is even more true of 7’. 
eupompe, is easily taken late in the afternoon when dis- 
turbed from the coarse grass in which the butterflies sleep ; 
otherwise I quite agree with Messrs. Marshall * and Loat 
(13. p. 146) as to the wildness of their flight. It is remark- 
able that the purple-tip is rarely caught sight of during 
flight, and even the crimson-tip of ewpompe is not nearly 
so conspicuous as might be supposed, but both butterflies 
have a peculiar bluish-white look when on the wing. 
54. Teracolus euwpompe, Klug. 
This species is both sexually dimorphic and variable, 
and has consequently been split up by authors into, e. g. 
pseudacaste, Butler ; theopompe, Felder, and dedecora, Felder. 
It would appear also to be conspecific with miles, Butler 
(26. p. 10). 
Klug says: “ Habitat in Arabia deserta, in Sinai monte, 
in Dongola et Habessinia.” Capt. Dunn took it on the 
Bahr al-Zarafa. Petherick took it on the White Nile. Loat 
took both sexes at Kaka and near Mongalla, as well as at 
Gondokoro. Selous took a male at Tawila, and both 
sexes at Tawfikiyé. The Swedish expedition took nine 
males and one female at Renk, Gebel En, and Kaka; these 
included the forms theopompe, Feld., and dedecora, Feld. 
In 1909 I took two females at Gebel fin; seven males and 
a female at Tawila, and an aberrant female at “the 
Mahdi’s place ” on Abba Island. 
In 1912 I met with it in considerable numbers, finding 
it at nearly every landing-place from Ad-Duwém to Rejaf. 
It was very common at Gebel Ahmed Agha, Kanisa and 
Mongalla, but might be described as abundant at Rejaf. 
This species varies greatly insize. Ina very few examples 
there is a purple glance or sheen on the crimson-tip. Many 
of the females were much worn. The great beauty of the 
males so fascinated me that I could not resist taking a 
considerable number, hence my collection gives the wrong 
impression that this species was commoner on the White 
Nile than, say, 7. evarne, which is less attractive. 
The Rothschild party took it commonly (pseudacaste) 
at Al-Nakhila in 1904, but I have no record from Khar- 
tim. Mr. Cholmley took it commonly north of Suakin, 
and Peel found it in Somaliland. It is common enough at 
Port Sidan; Col. Yerbury took two specimens at Aden 
* Trans. Ent. Soc. Lond., 1902, pp. 354, 371. 
