Forms of South- African Butterflies. 63 



on the Pretoria and Delagoa Bay Kailway, about 30 miles 

 from Barberton), Transvaal, where Mr. Cooke found the 

 butterfly extremely abundant on a wide treeless grassy 

 plateau roughly about 10 miles in diameter, but only a 

 few stragglers of it in the bushy and rocky surrounding 

 country. 



The size of this form presents some variation, the $ 

 ranging from 1 in. 7-9 lin., and the ^ from 1 in. 9 lin. to 

 2 in., but it seems always to very considerably exceed that 

 of the typical form. Some approach to a corresponding 

 discrepancy is found in the allied P. neita, Wallengr., 

 seven $ specimens of which, taken by Mr. C. N. Barker 

 at Kwamakwaza in Zululand expand 2 in. 1-3 lin., in 

 contrast with all I have seen from other parts of South 

 Africa, which range in size from {$) 1 in, 7 lin, to ($) 

 2 in, 



PSEUDONYMPHA NATALII (Boisd.). (Plate IV, fig. 3.) 



^. Satyrus natalii, Boisd., App. Voy. de Deleg., p. 594, 



n. 84 (1847). 

 ^. Erehia natalii, Trim., Rhop. Afr. Aust., ii, p. 203, n. 116 



(1866). 

 ^. Psc'udo7iymf]ia natalii, Trim., S.-Afr. Butt., i, p. 81 



(1887). 



As only the $ of this species appears to have been 

 described, I give here particulars of the slight differences 

 which the ^ exhibits. 



$ . Smaller ; exp. al., 1 in. 5-6 lin. A little darker ; rufous- 

 ochreons discal patch in both wings smaller and narrower. Hincl- 

 xmng : obsolescent sub-apical ocellus very faint (in one example absent); 

 other ocelli usually less distinct, — but in one example more developed 

 than in $ , especially the third inferior small one near anal angle. 

 Underside. — Hind-wing', in one example each loop of submarginal 

 ferruginous stria encloses a very small ocellus, the lower one very 

 faint, but in five other examples there is no trace of these additional 

 ocelli, and in three of them the looping of the stria is itself inter- 

 rupted or incomplete. 



I cannot find any published figure of this long-known 

 but somewhat rare species, and the accompanying illus- 

 tration will prove serviceable in determining the closely- 

 related forms of this group. It is worth noting that, 

 although P. natalii in its colouring and marking comes so 



