'891.] FROM SOUTH-WESTERN AFRICA. 67 



accorded to A. axina, Westw., as the great difference in size and the 

 absence of the two submarginal spots near the posterior angle of the 

 fore wings appear to be constant over a wide stretch of territory, from 

 Omrora as far eastward as Mashuna-land, and south-eastward to the 

 Limpopo and Marico rivers on the N.W. boundary of the Transvaal. 

 The males captured by Mr. Eriksson agree in their deeper colouring 

 and less transparency much more closely with the description and 

 figures of the two type-specimens from Tati and Gwailo rivers, than 

 they do with the other eastern specimens taken by Mr. Selous at 

 the Shashani River (between those two localities) and at several 

 stations to the south of Tati as far as the Marico. Singularly 

 enough, on the other hand, a Damara-laud male, collected by Mr. 

 John A. Bell, closely resembles the paler and mor« diaphanous 

 examples received from Mr. Selous. The females in Mr, Eriksson's 

 collection are also more warmly coloured and usually larger than 

 the eastern examples, and in them the subapical bar is not white 

 or whitish, but only of a paler tint than the ground-colour. In both 

 sexes, Mr. Eriksson's specimens exhibit much more fuscous basal 

 clouding than any other examples that I have seen ; and in this and 

 in their other peculiarities are further from A. doubledaxji. 



Exp. al.(d)l in. 8-1 1 hn. ; ( $ ) I in. 8-10 hn. The females 

 are not only smaller (as usual in this group of Acrcea), but have a 

 tendency to a dwarfed condition; two of Mr. Selous' specimens 

 expanding only 1 hi. 71in., and another, as well as one brought from 

 Damara-land by Mr. Bell, reaching an expanse of but 1 in. 6 lin. 



8. AcR^A ONERATA, u. sp. (Plate VIII. figs. 7 6,S, 8 a $ .) 



Allied to A. axina, Westw. 



Exp. al.(d) 1 in. 8 lin. ; ( 2 ) 1 in. 8-8i Hn. 



d" . Pale creamy reddish ochreous (a tinge of pink in hind wiiKj), 

 with moderate-sized black spots ; hind wing with seven large spots 

 of the ground-colour in rather wide black hind-marginal border. 

 Fore wing : base very narrowly black ; a very narrow sublinear 

 costal blackish edging from before middle, somewhat widening at 

 apex ; a very narrow hind-marginal blackish edging, becoming finely 

 linear below first median nervule, its inner edge somewhat dentated 

 on the nervules, which are very finely black- marked in apical area 

 and partly so (externally) below that area ; black spots in number 

 and disposition as in axina, except that the lowest spot in discal 

 series is minute, and, instead of being a little nearer base, lies con- 

 siderably nearer hind margin than tlie spot immediately above it. 

 Hind wing : basal blackish, darker than in axina, and scarcely 

 rising above costal nervure ; subbasal cellular spot elongate, crescentic, 

 separate from basal blackish ; no spot on upper discocellular nervule ; 

 in very irregular discal series of spots the 1st, 5th, and 7th are 

 rather remote from the rest, which are considerably beyond them, 

 and of which the 6th is minute and obsolescent ; spots in hind- 

 marginal border very distinct, the first and last smaller than the 

 rest and not rounded. Underside. — Much paler, of a softer and 

 more creamy tint ; in hind wing, an inferior basal patch and the 



