of the Genus Teracolus, Swacns. 457 
36. Teracolus ephyia, 
Pontia ephyia, Klug, Symb. Phys. pl. vi. figs. 9, 10 (1829). 
Occurs from Ambukol in Nubia northward to Upper Egypt. 
The wet-season form of the male nearly resembles the 
male of typical 7. etrida on the upper surface, but the female 
shows no trace of the interno-median spot of that species, 
whilst on the under surface all the discal spots are 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 7. etrida and T, lais. 
37. Teracolus lais. 
Teracolus lais, Butler, P. Z. S. 1876, p. 145. 
Teracolus halyattes, Butler, t. ¢. pl. vi. fig. 8, 3. 
Teracolus lycoris 2, Butler, t. c. p. 140, pl. vi. fig. 6, 2. 
Ranges from Kimberley across the Orange Free State to 
Swaziland. 
The female of 7. lads, the wet- (not dry-) season form, 
bears a vague resemblance to that of 7. etrida, var. bimbura, 
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 and 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 7. ephyza, 
but has more nearly the upper-surface pattern of 7. bimbura, 
with pure white under surface (indistinctly irrorated with 
black scales when examined through a lens), the discocellular 
dots 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 
form (7. halyattes) led My. Marshall into error. ‘he male 
of the latter is much like the wet-season form above, but both 
Ann. & Mag. N. Hist. Ser. 6. Vol. xx. 31 
