134 SOUTH-AFRICAN BUTTERFLIES. 



easily recognised. Its nearest ally is probably A. Satis, Ward, also a native of 

 East Africa ; but this species differs markedly in possessing two conspicuous 

 white spaces in the fore-wing and an irregular transverse double row of black 

 spots in the hind-wing. In the Hewitson Collection in the British Museum 

 there is another allied species (unnamed) labelled " Zanzibar ; " but in this 

 butterfly the wings are only semi-transparent and warm reddish-ochreous, and 

 the fore-wing has a conspicuous large black spot in the discoidal cell and a 

 dusky hind-marginal border enclosing six or seven large spots of the ground- 

 colour. 



The late ]\[r. Monteiro informed me that he met with A. Rdbhaias not 

 uncommonly at Delagoa Bay, but that it was not easily captured owing to its 

 high flight. 



Localities of Acrcea Rdbbaice. 



I. South Africa. 



H. Delagoa Bay. — Louren^o Marques (/. J. Monteiro, 1878). 



II. Other African Regions. 

 A. South Tropical. 



h. Eastern Coast.— " Bagamoyo (i^o^-a?/)."— Oberthiir. " Rib^."— 

 Ward. 



35. (2.) Acrssa Horta, (Linn.) 



Papilio II. Horta, Linn., Mus. Lud. Ulr. Reg., p. 234, n. 53 (1764), and 



Syst. Nat., ed. xii. p. 755, n. 54 (1767). 

 $ Papilio Horta, Drury, 111. Nat. Hist., iii. pi. 28, fi". i, 2 (1782). 



„ ,, Cramer, Pap. Exot., pi 298, fi". F, G ( (^ ) (1782). 



„ „ Wulfen, Cap. Ins., p. 31, n. 29 (1786). 



„ „ Fab., Ent. Syst., iii. i, p.. 159, n. 491 (1793). 



Acrcea Horta, Godt., Enc. Meth., ix. p. 231, n. i (181 9). 

 $ ^Acroia Horta, Trim., Rhop. Afr. Aust., i. p. 92, n. 57 (1862). 



Exp. al., 2 in. — 2 in. 8 lin. 



^ Scmi-tra7isparent ; brick-red with black spots ; the apical portion 

 of fore-wing transparent ashy-grey. Fore-wing : base narrowly suffused 

 with black ; red ground-colour abruptly and irregularly bounded by 

 the apical grey in an oblique line from costa beyond middle to end of 

 first median nervule ; an oblique irregular black streak closing dis- 

 coidal cell ; in some specimens a small more or less distinct spot in 

 cell near its extremity ; occasionally a small blackish spot beneath cell, 

 between first and second median nervules ; more rarely another small 

 spot nearer base, a little below median nervure ; along hind-margin a 

 row of sis more or less defined inter-nervular red spots, of which the 

 first and second, next apex, are larger and more elongate than the rest. 

 Hind-wing : all brick-red ; a conspicuous basal black patch, formed of 

 thi'ee or four confluent lax'ge spots ; a separate spot close to costa near 

 base ; two spots marking extremity of discoidal cell, and another near 

 them in the cell ; a discal row of eight spots from costa to inner 

 margin, highly irregular, the outermost spot being that immediately 

 above third median nervule, and the spots between it and inner margin 

 larger and less rounded than the others ; a hind-marginal black border 



