of the Genus Teracolus, Swans. 463 
51. Teracolus agoye. 
Anthopsyche agoye, Wallengren, Lep. Rhop, Caffr. p. 15 (1857 
Anthocharis cosphorus, Trimen, Trans. Ent. Soe. ser. 3, vol. i. Dp. 523 
(1863). 
Teracolus Bowkert, Trimen, op. cit. 1883, p. 358. 
Teracolus zephyrus, Marshall, P. Z. 8. 1897, p.8 
South Africa. 
I have carefully compared the various descriptions of this 
species with our examples, and have utterly failed to discover 
any reason for keeping them separate. ‘l'hree examples from 
the Godman and Salvin collection of the wet-season phase 
obtained at Kimberley (two males and one female) agree 
remarkably well with Mr. Marshall’s description: one worn 
and damaged male example in our series and one in the 
Hewitson collection of the intermediate phase, having the 
apex of primaries and the secondaries beneath creamy 
yellowish, are somewhat larger, with the black inner bordering 
of the apical patch continued almost to the first median 
branch; these are from Damaraland, and therefore should 
represent 7’, agoye=eosphorus ; whilst a male in the Hewitson 
collection of the dry-season phase from the Transvaal has all 
the veins finely blackened above, the apical patch intermediate 
in size, with only its upper half black-bordered, its outer 
portion irrorated with greyish lavender, the apex of primaries 
and the secondaries below rose-pink. But for the compara- 
tive rarity of 7. agoye, 1 am certain that My. Marshall would 
not have been so inconsistent as to regard the very slight 
characters upon which he has separated it into three species 
as either likely to be constant or of the least importance. 
There are hardly any of the forms which he has associated 
under his 7’. evagore, T. evippe, and T. achine which do not 
differ more markedly from one another. He himself says of 
specimens which he calls J. achine: “The undersides are 
equally variable, ranging from the type with black neuration 
to a specimen in which there is no trace of black”; and, 
under his 7. phlegyas: ‘the development of the black on 
neuration is such an eminently unreliable character in this 
genus.” It is perfectly well known also that the width of 
the black inner edging of the apical patch and the black 
costal streak on the secondaries are far less reliable, that the 
white or creamy under surface is dependent upon season, 
and that the discocellular dots are most inconstant. What 
characters then remain ? 
