198 Roger Verity 
band-like space crosses the wings, whilst the basal half of hind 
wings is not much darker than the outer one; their colour varies fron 
a pale and dull buff to a bright reddish ochreous colour. 
The II generaton, as far as my materials show, seems to vary 
very much individually everywhere, but equally little geographically 
when large series are compared. Thus gigas seems to spreak 
to Malta, Africa and Asia and I only find the following remarks 
to make. Instead, the I generation is influenced much more by 
local conditions and produces striking races, as we will see. 
From Fez, in Morocco, I possess a May form, larger than 
Ipllides, of a paler ochreous vellow on upperside and with a dirty 
looking underside, where a reddish ochre tinge, recalling sand, is 
thickly veiled over by black scales, less so than in Ipllides 
but more abundantly on basal half than on outerhalf of hindwing 
precisely as in that form; thin and sharp premarginal streak on 
both surfaces: arenosa, mihi, Oberthür informs us in his Et 
Lep. Comp. that a large percentage of African individuals have 
a very broad dark band on upperside and he figures one in 
vol. XIX, fig. 4417. This remark, no doubt, applies to the II gene- 
ration. I have described it in the Entom. Record, 1916, p. 172, 
under the name of Jatevittata, which thus probably is very suitable 
to some African races, if not to most of them, to designate their 
most prominent differentical character as compared to gigas, Vrty. 
On upperside /atevittata is the same as marginata, Rühl, but on 
underside it is quite different because it is like Ipyllus (ground colour 
of hindwing very pale yellow, lightly suffused whith pale sand- 
colour and with an extremely thin streak across the middle), whereas 
Rühl states particularly that the underside of his marginata is 
only a transition to /yllus, with markings much sharper than 
in the latter. This makes it most positively an emilyllus and 
the locality of Asia Minor of his „type“ confirms it still more. 
Finally, in connection with Africa, I must also recall the other 
remark of Oberthür that in this region form thyrsides, Stdgr., in 
the sense of three or four well marked ocelli on upperside of 
hindwing, is extremely scarce. Instead Seitz in Groß-Schmett, I, 
p. 146, informs us he „found typical specimens of it in the valleys 
of the Atlas“. The one he figures on pl. 48 is anything, but „typi- 
cal“, when compared to Herrich Schäffer’s figures 430—1, quoted 
by Staudinger in his original description and thus real'y the „type“ 
figure. Seitz’s African insect is much more heavily marked with 
black on both surfaces, having a darker and bolder pattern, which 
produces quite a different impression, on underside, so that it 
somewhat recalls to mind that of C. vaucheri, Blach., from the 
