NYMPH ALIX^. 283 



discoidal cell ; a broad, oblique, white stripe beyond middle, not reach- 

 ing to costa or to hind-mai'gin, crossed by three nervules ; a large, 

 somewhat semicircular white blotch occupies nea-rly the whole of 

 inner margin, rising as far as median nervure, but not quite to its 

 second nervule. Hind-%ving : iridescent white ; basal jDortion blackish ; 

 a broad black band along hind- margin, wider and suffused with brownish 

 about anal angle, radiating in streaks behoeen nervules. Under side. 

 — Paler : similar in pattern. Fore-tvi-ng : a small white spot at base ; 

 another on costa, near base ; a third in discoidal cell, he/ore the white 

 streak ; costa tinged with ochreous-brown, as well as apical portion 

 beyond oblique white band. Hind-iving : hind-marginal band coloured 

 with ochreous-broAvn, very much narroiver than on upi^er side, radiating 

 very distinctly between nervules ; a conspicuous white spot on narrow 

 basal black. On loth wings are the traces of a double row of minute 

 whitish lunules along hind-margin, and in liind-ioing a submarginal 

 series of rather indistinct white minute spots in fuscous rings situated 

 on the inter-nervular blackish rays. 



$ Similar to the $, hut all the ivhite markings larger, especially 

 the cellular streak and the subapical stripe. Fore-iving : a small spot 

 in discoidal cell corresponding to that of the under side. Under 

 SIDE. — Hind-marginal lunules more pronounced, — those of the fore- 

 wing tinged with blue. 



This is a very near ally of E. Anthedo7i^ Doubh, a native of "Western 

 Africa, being indeed its Southern representative. The principal differences pre- 

 sented by Wahlbergi are (i) its considerably larger size {Antliedon not appearing 

 to exceed 3 in. 8 lin. in expanse of wings), and (2) its larger white markings, 

 especially as regards the hind-wing, where in Antliedon the white extends to 

 but little beyond the middle. These differences exactly correspond to those 

 which distinguish the South-African Amauris duminicanus, Trim., from the 

 West-African A. Niavius (Linn.) ; and E. Wahlhergi is as accurate a mimicker 

 of the former as E. Anthedon is of the latter species of Amauris. 



I met with this very conspicuous butterfly at D'XJrban, Natal, in February, 

 !^[arch, April, and June ; but it was always scarce, and I captured four speci- 

 mens only. It is a woodland insect, and is fond of floating about low trees, 

 quite in the manner of the Amauris it so closely resembles. The imitation is 

 so exact, that, prior to actual examination of a captured individual, I found it 

 impossible to tell whether I M'as taking the EuraUa or the Amauris. The late 

 jMr. M'Ken sent several specimens to the South-African Museum, all taken in 

 the D'Urban Botanic Gardens ; and Colonel BoAvker has since forwarded a few 

 from the same neighbourhood. Of the latter, one remarkably small ^ is only 

 3 in. I lin. in expanse of wings. I have recorded (Trcrjis. Ent. Sac. Lond., 1873, 

 p. 107, note) the capture by Captain H. C. Harford of a_ 9 of this butterfly 

 paired with d. $ E. mima, Trim. XotAvithstanding the very different pattern 

 and colouring of the wings, the two forms are very closely related. 



Localities of JEuralia Wahlbergi. 

 I. South Africa. 



E. Natal. 



a. Coast Districts. — D'Urban. Little Umhlanga'(jy. CI Harford). 

 "Lower Umkomazi." — J. H. Bowker. 



F. Zulidand. — St. Lucia Bay [Colonel H. Tower). 



