the Butterflies of the White Nile. 31 



Bor, Malek, Tombe, Kiro, Mongalla (females abundant, 

 males scarce), Lado, Gondokoro and Rejaf — -in fact, 

 throughout the district. 



Rothschild took several on the Atbara; it is common 

 at Port Sudan and at Aden [under the name of lordaca]. 

 It also occurs in Somaliland. B. mesentina has by far the 

 widest distribution of the genus, extending as it does over 

 the greater part of Africa, Madagascar, Persia, Afghanistan, 

 India and Ceylon. 



Yerbury notes its attachment to a species of Capparis 

 on which the larva feeds. 



I found the males to have a sHght scent, variously 

 suggesting the adjectives " musky," " aromatic," "flowery." 



40. Pinacopteryx venata, Butler. 



[Plate II, figs. 1 c^, 2 ?, 3 u. s.] 



The type of this little-known butterfly, a female, was 

 captured by Petherick somewhere on the White Nile.* 

 Another female was taken by Capt. H. W. Dunn on the 

 Bahr al-Zarafa in 1900. 



On March 8th, 1902, Mr. Loat took a male at Gondokoro, 

 which was described by Dixey (12. p. 141). 



Meanwhile the authorities at the British Museum had 

 identified this species with P. doxo, Godart, but Messrs. 

 Trimen and Dixey, who have both carefully examined 

 Godart' s type at Edinburgh, are satisfied that this identifi- 

 cation is wrong. Godart's insect appears to come nearest 

 to P. simana, Hopfier.f 



In February 1912 I was fortunate enough to capture 

 twelve specimens of this distinct, though not very attractive 

 " White," viz. a male and three females at Shambi [Lat. 

 7° 0' N.], a male and two females at Malek [Lat. 6° V N.], 

 and three males and two females at Gondokoro' [Lat. 

 4° 54' N.]. 



Mr. Loat's specimens and my own were all found between 

 Lat. 7° 0' N. and Lat. 4° 54' N., but Capt. Dunn's specimen 

 must have come from further North, probably 8° 30' N., 

 or even 9° N., and the precise locality of Petherick's speci- 

 men is also unknown. 



* " Descriptions of a New Genus and six New Species of Pierinae," 

 by A. G. Butler, F.L.S., etc. (There called Ixias venatus.) Trans. 

 Ent. See. Lond., 1871, p. 169, Plate VII, fig. 7. 



t Dixey, Proc. Ent. Soc. London (1912), pp. xlii, cxiii. 



