PIEKIN.E. 135 



yellow mark preceding terminal disco-cellular spot usually larger tliau 

 in $, in one example much wider externally and prolonged almost to 

 Lase.^ 



It is with much hesitation that I accord Gavmi specific rank, 

 having in view the examples of both sexes of the variable Achine, 

 which exhibit a partial blackening of the ueuration as above mentioned. 

 It seems, however, to stand out as a prominent race, and perhaps may 

 breed apart from Achine, if we can judge by a single case of pairing 

 observed by Colonel Bowkcr at D'Urban in December 1879. In this 

 pair (sent to me by Colonel Bowker) the characteristic complete black 

 neuration of tbe under side is equally well marked in both sexes, 



A typical specimen ($) of Wallengren's Gavisa was kindly lent to 

 me by Mr. Aurivillius, and it should be noted that it agreed with the 

 author's description {loc. cit.) in having the black neuration of the 

 under side limited to near the hind-margins, and in that respect more 

 resembled the intermediate examples which I have referred to Achine. 



Gavisa seems limited to the eastern side of South Africa, the most 

 western locality I liave recorded for it being the right bank of the Kei River, 

 whence Colonel Bowker sent one of each sex in 1873. These two specimens, 

 though strongly black-veined beneath (tlie ^ especially), are less heavily black- 

 marked above, and the $ has the under side of the hind-wings tinged Avith 

 ochre-yellow. 



I met with this form of Tcracolus not uncommonly in IvTatal, especially in 

 the neighbourhood of D'Urban ; it had the ordinary flight and habits of the 

 genus, and I observed it on the wing at the end of January and throughout 

 February and March. '-^ 



Localities of Tcracolus Gavisa. 



I. South Africa. 

 B. Cape Colon)'. 



b. Eastern Districts. — Fort Warden, Kei Eiver (/. H. BowJier). 



D. Ivaffraria Proper. — Bashee River (J. H. Boickcr). 



E. Natal. 



a. Coast Districts. — D'Urban, Pinetown (■/. H. Boiclicr). Tongaati 



River. Little Noodsberg. 

 h. Upper Districts. — Estcourt {J. M. Hutcldnson). 

 Ct. " Swaziland."— The late E. C. Buxton. 



K. Transvaal. — Junction of Limpopo and Marico Rivers (.4. TI'. Erilis- 

 8071). Lydenburg District (T. Ayres). 



^ As Gerstiicker [Glicd. -Fauna dcs Sansibar-Gehietcs, Ins., p. 364) has noted, the ? 

 figured by Eeiche as that of his £xole {loc. cit.) undoubtedly belongs to the Achine group, 

 and I concur with Mr. Butler in thinking that it should be regarded as identical with the 

 ? of Wallengren's Gavisa. 



Having examined the types of Subvenosus, Butl., from Victoria Nyanza, I find the ? 

 inseparable from that of Gavisa, while tlie i , though very near the corresponding sex of the 

 species named, differs in wanting the inner black edging of the apical patch, and in the 

 feeble development of the inner-marginal blackish bar of the fore-wings and the costal one 

 of the hind-wings. 



'^ Five examples sent to me from D'Urban by Mr. A. D. Millar are dated 17th Decem- 

 ber 1SS7. 



