the Butterflies of the White Nile. 41 



It occurs in the Victoria Nyanza district, Natal, Cape 

 Colony, Sierra Leone, Lagos, South Nigeria, the Gambia 

 district, the Cameroons and Angola. 



The White Nile specimens are very small and many 

 of them have the orange-tip paler than in specimens taken 

 further south. 



A male yielded a scent like Freesia. 



\^Teracolus omphale, Godart. 



The Swedish expedition sent home two TeracoU, a male 

 and a female, one taken at Renk, the other at Kaka, in 

 February. AurivilUus calls them T. theogone, Boisduval, 

 the winter form of omphale. He adds that both the 

 specimens are small, the male measuring 33 mm. in expanse, 

 the female only 28 mm. 



I have not come across any other record of this species 

 being taken on the White Nile, and did not myself meet 

 with it anywhere in the Sudan. 



Odd specimens of the genus Teracolus are difficult to 

 determine, and it seems reasonable to conjecture that the 

 butterflies taken by the Swedes were not ortiphale, but 

 perhaps the epigone form of evippe, or some other ad- 

 mittedly White Nile species, such as achine, or evagore. 



Omphale occurs in Somaliland, though Peel did not 

 come across it there; the two butterflies which Dr. Dixey 

 (11. p. 15) so named, turn out, as he informs me, to be 

 respectively an " intermediate " male of T. evagore, Klug, 

 and a wet-season female of T. achine, Cramer. 



It has also been taken in Abyssinia and almost all over 

 Africa south of the Equator. The Hope collection contains 

 two specimens from the Gambia. 



In the absence of confirmatory evidence I exclude T. 

 omphale from the White Nile list.] 



57. Teracolus daira, Klug. 



The synonymy of this species also is puzzling. Not only 

 is it sexually dimorphic, but the ground-colour of the 

 female may be either white or ochreous. Klug stated that 

 the types came " ex Arabia felici." 



Dr. Dixey has carefully studied long series of this butterfly 

 and a closely allied form from Aden, which he is convinced 

 is quite distinct. While admitting that King's male insect 

 might well have come from Arabia, he asserts that no such 



