I50 SOUTH- AFRICAN BUTTERFLIES. 



with and below spot at extremity of cell, one above, the other below 

 first median nervure ; base moderately suffused with dusky-grey ; costal 

 and hind-marginal black edging line very attenuated. Hind-wing : 

 basal and disco-cellular spots, and discal row of eight spots, quite as in 

 Douhledaj/i, but smaller and often indistinct (excepting the two near 

 and at extremity of cell, and the two beyond cell respectively above 

 and below third median nervule) ; hind-marginal border consisting of a 

 terminal black line and an inner fainter festooned line enclosing between 

 them seven elongate spots of the ground-colour ; towards anal angle 

 the festooned line becomes fainter and sometimes obsolete. Under 

 SIDE. — Paler. Fore-wing : apical black wanting, replaced by greyish- 

 yellow, crossed by yellow-ochreous inter-nervular rays from hind-margin ; 

 no basal suffusion ; two small black spots on costa near base ; other 

 spots as on upper side. Hind-toing : pale-yellowish, varied near base 

 and as far as middle with pinkish-red (leaving rings of the pale ground- 

 colour about the black spots) ; hind-marginal and sub-marginal lines 

 more defined, their enclosed spots of the pale ground-colour ; a little 

 before the border, and leaving a bounding line of the ground-colour, a 

 series of broad, short, inter-nervular, yellow-ochreous rays ; spots as on 

 upper side, but more constant and much better marked. 



$ Paler, duller ; hasal suffusion voider, darker, in hind-iving extend- 

 ing over inner-marginal area. Hind-wing : hind-marginal border much 

 wider, sufiused, its enclosed spots almost obsolete. Under side. — As 

 in $, but paler ; spots of hind-wing larger. 



This butterfly is very closely related to A. DouUedayi, Gu^r., but at once 

 distinguishable by the very conspicuous broad black tip of the fore-wing. In 

 the $ the ground-colour is paler and Avith less of a fulvous tinge, and the fore- 

 wing is less transparent ; while in the only $ I have seen (from Tati) there is 

 no trace whatever of the subapical whitish bar of Douhledayi ^ . Acrcea 

 Dirccea, Westw. (loc. cit., p. 348, n. 42), seems from the short diagnosis given 

 not to be separable from A. Caldarena. 



The species appears only just to enter the extra-tropical region. Hewitsou 

 (/. c.) notes that it was received "in abundance" from Lake Nyassa, and had 

 previously been sent from the Transvaal by Dr. Bradshaw. Specimens have 

 reached the South-African Museum at different times from the Matabele 

 Country and the Zambesi Valley, and also one from Damaraland ; while 

 recently (April 1882) Mr. F. C. Selous collected several individuals on the 

 Marico and Upper Limpopo in the North-West Transvaal, and forAvarded them 

 to me, with many other species, for determination. 



Localities of Acrcea Caldarena. 



I. South Africa. 



K. Transvaal. — Upper Limpopo and Marico Rivers (F. C. Selous). 



11. Other African Regions. 

 A. South Tropical. 



a. Western Coast. — Damaraland (Hutchinson). 



ai. Interior. — Between Limpopo and Zambesi Rivers (T. Ayres). 

 " Motloutsi River and Tati {F. Oates)." — Westwood. Zambesi 

 {F. H. Bather). 



