South African Butterjlies. 377 



Zeritis Basuta. 



Wallongren, Svensk. Ak. Handl. 1857, p. 46. 



A ^ and two ? from Maseru closely agree with 

 Wallengren's diagnosis. As stated in Rhop. Air. aust. 

 p. 279, this form is linked to Z. Protumnus, Linn. (Mus. 

 Lud. Ulr. p. 34-0) by several intermediate varieties from 

 various parts of South-Africa ; but as Basuta appears in 

 both sexes to be a constant race in Kaffraria Proper, 

 Natal, and Basuto-land, it may fairly claim to be treated 

 as distinct. In a ? sent me from Pine Town, Natal, by 

 Mr. Morant, the white markings are unusually well de- 

 veloped, especially in the hind-wings; but in two ? 

 from the Trans-Vaal Country (collected by Mr. T. Ayres) 

 those markings are even broader in the fore-wings, while 

 in the hind-wings, though also very wide, they are 

 suffused. 



As in Z. Protumnus, there is a considerable difference in 

 the antennte of the sexes, those of the $ being through- 

 out rather thicker than those of the S , especially towards 

 the base. 



Family PAPILIONID^. 



Sub-fam. PiERiNiE. 



Mr. Bates (Journ. of Entora. i. 218) has explained the 

 grounds which lead him to associate the Pier idee and 

 Papilionidce of authors as sub-families of the common 

 Family Papilionidce ; a course which had been previously 

 adopted by Mr. Stainton (Manual of Brit. Butt, and 

 Moths, i. 12). There is undoubtedly a passage between 

 the two (as suggested by Mr. Wallace, Tr. Ent. Soc, 

 3rd ser., iv. 314) afforded by the genera Thais and Zegris, 

 the former wanting the interno-median nervule of the 

 fore-wings, and the pre-discoidal cell of the hind-wings so 

 characteristic of true Papilionidce, and having, moreover, 

 long porrect palpi, while the latter approaches Thais 

 (and Parnassius) in its pupa stage. See Boisduval, Sp. 

 Gen. Lep. i. 552-3. 



