of the Genus Tcracolus, Swains. 457 



36. Teracolus ephyia. 



Pontia ephyia, King, Syinb. Phys. pi. vi. figs. 0, 10 (1829). 



Occurs from Ambukol in Nubia northward to Upper E;_ypt. 



The wet- season form of the male nearly resembles the 

 male of typical T. etrida on the upper surface, but the female 

 shows no trace of the interne- median spot of that species, 

 whilst on the under surface all the discal spots arc wanting. 

 The dry-season form is smaller, shows scarcely a trace of the 

 black inner edging to the orange subapical patch ; the second- 

 aries also have no marginal spots and the under surface is 

 suffused with buff. 



Mr. Marshall was quite correct as to the females formerly 

 associated by me with this insect having nothing to do with 

 it, but he should also have discovered how closely allied it is 

 both to T. etrida and T. lais. 



37. Teracolus lais. 



Teracolus lais, Butler, P. Z. S. 1870, p. 145. 

 Teracolus halyattvs, Butler, t. c. pi. vi. fig. 8, J. 

 Teracolus ly cor is 2, Butler, t. c. p. 140, pi. vi. fig. 6, . 



Ranges from Kimberley across the Orange Free State to 

 Swaziland. 



The female of T. lais, the wet- (not dry-) season form, 

 bears a vague resemblance to that of T. etrida, var. binibura, 

 but the orange subapical bar has no inner blackish edging and 

 there is no spot on the second median areole of primaries, the 

 two marginal spots nearest to apex of secondaries are also 

 confluent ; on the under surface the basal area and apical 

 border of primaries arid the secondaries, with the exception of 

 a discal patch towards apex, are washed with pale buff; the 

 orange subapical curved bar of the primaries is paler than 

 above, but the interno-median black spot is distinct. The 

 males vary greatly in expanse, the type measuring about 

 34 millim., and a second example from the Godman and 

 Salvin collection no less than 46. It approaches T. epliyia, 

 but has more nearly the upper-surface pattern of T. biml)ura y 

 with pure white under surface (indistinctly irrorated with 

 black scales when examined through a lens), the discocellular 

 clots black, that of the secondaries attached to an orange spot ; 

 the costa of these wings is also narrowly orange towards the 

 base. 



My incorrect identification of the sexes of the dry-season 

 foim (T. halyatles] led Mr. Marshall into error. The male 

 of the latter is much like the wet-season form above, but both 



Ann. & Mag. N. Hist. Ser. 6. Vol. xx. 31 



