i88 SOUTH- AFRICAN BUTTERFLIES. 



from Sierra Leone, and also from Kilima-njaro, and have captured them 

 flying together in Mauritius.^ 



Notwithstanding the Aden evidence, Mr. Butler {Joe. cit.) keeps 

 apart Pyrcnc, Swains., HyUcea, Boisd., Aleurona, Butl.,""^ and Florella, 

 Fab., but he admits the great difficulty of assigning ^ s to the several 

 $ s so separated ; and I must say that the copious material arranged 

 by him in the British Museum collection seemed to me, upon thorough 

 examination last year (1886), to show very satisfactorily that there 

 is not more than one variable species concerned. 



Swainson {op. cit.) figures as Fyrenc an ordinary ^, with the under 

 side rather dull yellowish and its hatching moderately distinct, and a 

 small white $ (upper side only) nearly resembling the ^. He notes 

 that the ^ was one of about twenty brought by Burchell from the 

 interior of the Cape, but that the % was discovered in Haworth's col- 

 lection. Mr. A. G. Butler first called attention {Cat. Fah. D. Lep., p. 

 224, 1868) to the resemblance borne by Fabricius' type oi Florella 

 in the Banksian collection to the Rliadia of Boisduval, and upon in- 

 spection of this example in 1881, I found it to be unquestionably 

 (though very worn and faded) identical with Boisduval's insect. The 

 lack of any $ approaching the Florella { = Fhadia) colouring led me 

 early to the conjecture that these yellow ^ s could only be associated 

 with Pyrcne ; and the subsequent capture (by myself at D'Urban ^ 

 and by Colonel Bowker at King William's Town* respectively) of two 

 pairs in copula, served to confirm that view, the $ in each case being 

 of the ordinary Pyrcne pattern and the $ a yellow Florella!' Mr, H. 

 L. L. Feltham writes to me that in 1886, at the junction of the 

 Modder and Vaal Rivers in Griqualand West, he found a large number 

 of pairs at rest, and that in all the cases examined (from twenty to 

 thirty pairs) the $ was yellow. 



Larva. — Yellowish-green dorsally, minutely granulated with black ; 

 pale glaucous-greenish laterally ; the two colours separated by a rather 

 wide, conspicuous yellow stripe. Head coloured like the back. Legs 

 pale glaucous-greenish. Feeds on Cassia arachoules!' 



1 Mauritian si^ecimens are in both sexes smaller than the ordinary Continental ones, 

 and some from the Comoro Islands in the British Museum are still smaller. 



- From Mr. Butler's description {loc. cit. in synon.), and his remarks in the paper just 

 quoted on the Aden forms, I think that his C rufosjiarsa, founded on a 9 from Madagascar, 

 cannot be separated from Aleurona. 



3 26th March 1867. •* 12th September 1870. 



^ The capture in copuld at Aden, by Major Yerbury, of similar sexes of the Pyrene 

 pattern is recorded by Mr. Butler {Proc. Zool. Soc. LoncL, 1S84, p. 487). 



Mr. A. D. Millar has sent me the paired sexes captured by him at D'Urban on loth 

 February 18S8. Tiie 9 in this case is worn and rather small ; it appears to have had a 

 faint tinge of yellow (with slight traces of spots) along the hind-margins, but is otherwise 

 all greenish-white; the disco-cellular spot of the fore-wings is rounded much as in the 

 yellow 9 . 



•* Mr. A. D. Millar has forwarded to me a specimen of the Cassia upon which he has 

 observed Florella laying eggs at D'Urban, Natal. It has been kindly determined by Mr. 

 MacOvvan as Cassia corymhosa, an introduced South American species. 



