26 MB. E. TR1MEN ON BUTTERFLIES FROM [Jan. 16, 



the hind-marginal border ; spots in the latter much larger than on 

 upperside, pale-creamy, the fuscous reduced to a narrow very 

 sharply defined edging to the "spots l . 



$ . Duller, varying from a somewhat browner tint than that of the 

 male to a decidedly dusky pale brownish grey — the fore wing usually 

 duller than the hind wing (which retains more of the ochry- 

 yellow tinge), and in the darker specimens exhibiting a more or 

 less ill-defined whitish subapical cloud : spots usually larger ; basal 

 areas usually duskier than rest of wing, but rarely with the limited 

 fuscous scaling common in male. Hind winy : hind-marginai 

 border broader and blacker, its enclosed spots sometimes much 

 paler, almost whitish. Underside. — Much paler than upperside, 

 but varying in correspondence with its brighter or duskier tint. 



This dull-tinted Acra>a has much of the aspect of A. doubledayi, 

 Griier., the spots being very similar in size and disposition, but 

 differs in its much shorter abdomen, shorter and much less apically- 

 produced fore wings, the possession of three upper submarginal 

 spots instead of linear internervular streaks in the fore wings, the 

 better definition of the hind-marginal fuscous border (and of its 

 enclosed spots) in the hind wings, and, in the female, in having 

 merely an indication of white subapical clouding in the fore wings 

 in place of a conspicuous broad white bar. The colouring and 

 marking of the abdomen agree with those exhibited by each sex 

 respectively of A. doubledayi, yet a female received from Bihatla, 

 Delagoa Bay (Rev. H. Junod), approaches A. omrora in having the 

 back and sides of the terminal half all white. 



It is worth notice, as showing the intimate interrelation of the 

 species of this genus, that every marking in A. asema corresponds 

 closely in form and position with those of the totally different- 

 looking, very strongly-marked, and richly-coloured A. violarum, 

 Boisd. ; and, curiously enough, a precisely similar aberration Occurs 

 in the male of both species, viz. all the spots in the submarginal 

 series of the fore wings being crescentic instead of rounded. 



16. ACRiEA DOUBLEDAYI, Gfuer. 



Acrosa doubledayi, Guer. Voy. Lefebv. en Abyss, vi. p. 378 

 (1847) ; Trim. S.-Afr. Butt. i. p. 147. n. 41 (1887). 



Of this widely distributed species in Eastern and South-eastern 

 Africa there are 23 examples, 18 being from the Mineni Valley. 



17. ACR^EA AXLTNA, West^ . 



Aercea axina, "Westw. App. Oates's Matabele-land etc. p. 344. 

 n. 33, pi. F. figs. 5, 6 (1881). 



The 10 examples of this small Acrcea, so closely allied to A. 



1 Two small males (e.vp. cd. 1 in. 9 lin.), taken by Mr. Selous on the Shashani 

 River, Matabeleland, in 1883, differ from the Manica specimens in having 

 narrower, more elongated fore wings ; a much clearer and brighter ochi-eous 

 ground-colour ; a large terminal discocellular spot in fore wings, but all the 

 other black markings smaller, and two (the 4th and 6th) of the spots of the 

 submarginal series in the fore wings wanting. 



