62 SOUTH-AFRICAN BUTTERFLIES. 



the inter-nervular rays, in tlie large white patch of both wings ; in 

 the ? this character is either wholly wanting or very faintly indicated. 

 Closely allied to A. Niavius, Linn., but seems constantly to differ 

 as follows, viz. (i) its size is considerably larger, the West African 

 form expanding only 3-| to 3^ inches; (2) the great extent of the white 

 patches (especially that of the hind-wings, which in Niavius does not 

 extend beyond the extremity of the discoidal cell) readily distinguishes 

 it. In the clouding of the nervures and inter-nervular rays the 6 

 Dominicanus exceeds the 6 Niavius, but the reverse appears to be the 

 case with the ? s. 



I only on two occasions met with this very fine Amauris, viz., on the 6th 

 February 1867, in the Botanic Gardens, and on the 22nd, at the Umgeni 

 Bridge, near D'Urban, in Natal. Three or four examples were floating about 

 a wooded slope, quite in the manner of A. Eclieria, but none descended within 

 reach. The late Mr. M. J, M'Ken at different times forwarded several 

 D'Urban specimens to the South- African Museum ; and Colonel Bowker has 

 recently, viz., on 20th November 1880, taken the butterfly in the forest at 

 Clairmont, near the same place. 



A. doininicanus is the austral representative of A. Niavius (Linn.), the well- 

 known species of Tropical Western Africa, which is recorded from Angola, 

 Ashanti, and Sierra Leone. It extends, however, far up the Eastern Coast, 

 Colonel Bowker having taken several examples at Quilimane, and Gerstaecker 

 (Gliederth. -Fauna des Sansibar-Gebietes, 1873, p. 367) recording two speci- 

 mens from Mombas. 



This butterfly is most accurately mimicked by Euralia Wahlhergi, Wallen- 

 gren, which is the southern representative of the West-African E. Antliedon, 

 E. Doubl., and differs from its tropical ally in exactly the same manner as 

 A. dominicanus does from A. Niavius. Another imitator is a black-and-white 

 form of the $ Papilio Cenea, closely allied to the West- African $ of P. Brutus, 

 Fab., formerly known as P. Hippocoon, Fab. ; and it is most interesting to 

 note that while the Western 9 Pajnlio and Euralia copy the Western Amauris, 

 the Southern ones closely follow the differing pattern of A. dominicanus. 



Localities of A. dominicanus. 



I. South Africa. 

 E. Natal. 



a. Coast Districts. — D'Urban. 

 H. Delagoa Bay (/. /. Monteiro). 



11. Other African Regions. 

 A. South Tropical. 



h. East Coast. — Zambesi (Rev. H. Rowley.) Quilimane (Col. J. Et. 

 Bowker.) "Mombas (Dr. 0. Iversten)." — Gerstaecker. 



Sub-Family 2.— SATYRIN^. 



Satyrides, Boisd., Sp. Gen. Lep., i. p. 166 (1836). 



Satijridie, Swains., Hist, and Nat. Arrangem. Ins., pp. 93, 94 (1840), [Part]. 



„ Doubl. and Westw., Gen. Diurn. Lep., ii. p. 352 (1851). 



Satyrinm, Bates, Journ. Ent., 1861, p. 220; 1864, p. 176. 



Imago. — Head small or rather small, always more or less hairy, 

 often with a distinct frontal tuft of longer hairs ; eyes usually naked, 



