1894.] MASTCA, SOUTH-EAST AFRICA. 21 



centred with pale metallic golden ; besides two parallel submarginal 

 black streaks, an inner less regular catenulated one outwardly 

 bounding the series of ocelli. Fore iving : basal swelling of costal 

 nervure ochre-yellow ; a few striolations usually completely across 

 basal third, but otherwise the creamy middle area is clear from 

 base to ocelli ; the latter form a nearly straight series of five, of 

 which the last (between 2nd and 3rd median nervuies) is usually a 

 little apart from and smaller than the rest, with the exception 

 of the first. Hind iving : striolation well developed in inner- 

 marginal area, but very rarely extending at any point into discoidal 

 cell ; ocelli seven, of which the first is separate from and con- 

 siderably before the rest (being between subcostal nervuies), while 

 the others are contiguous (the 6th and 7th confluent). 



The male is smaller than the female (escp. al. 1 in. 4|-7 lin.), and 

 has the fuscous borders much darker on the upperside, where also 

 the ochre-yellow ocelli (always more or less w ell-marked in the 

 female) are represented only by two or three indistinct black spots. 

 On the underside the male differs constantly in the restriction of 

 the black striolation to the costal and inner-marginal borders, 

 ■whereas in the female this covers all the area in both wings except 

 a small discal space immediately before the ocelli. 



P. pione resembles P. leda in its whitish fuscous-bordered upper- 

 side, but in its striolation and position of the ocelli on the under- 

 side, as well as in its stouter structure throughout, is more nearly 

 related to P. 'panda. The fuscous bar along the inner margin of 

 the fore wings on the upperside is a Aery striking feature in pione, 

 and gives the species a curious superficial likeness to some of the 

 smaller female Teracoli and Terias in the distant group of Pierince. 



This very interesting Physaeneura was found during the greater 

 part of March, flying very slowly in open forest and settling on 

 grass. In Natal I found its close ally, P. panda, quite away from 

 forests, frequenting steep exposed hill-sides and often settling on 

 the bare ground. 



Genus Pseudonympha, "Wallengr. 



8. Pseudonympha yigilans, Trirn. 



Pseudonympha vigilans, Trim. S.-Afr. Butt. i. p. 84. n. 15 (1887). 



The single good example (a female) of this Butterfly was 

 captured in the Christmas Pass on the 11th February, a locality 

 about 400 miles northward of the most northern of the previously 

 recorded stations of this generally distributed South- African species, 

 viz. the Lydenburg district of Transvaal. Mr. Selous's specimen 

 comes nearest to the Natalian and Transvaalian examples, but is 

 characterized on the upperside by the unusual restriction of the 

 fulvous patch in the fore wing (which, though it extends rather 

 nearer to the hind margin beneath the ocellus, does not impinge 

 on the discoidal cell), and by the well-developed small ocellus near 

 the anal angle of the hind wing ; while on the underside the hoary- 

 grey and brown mottlings are more sharply contrasted, and both 



