50 
separate names to such of the others as require it. The simplest plan 
is the following :— 
Cidaria citrata ab fusca, mihi, n. &b. = russata var. e, Stgr., loc. cit. 
Forewings nearly unicolorous fuscous. 
C. citrata ab. ferruginea, mihi, n. ab., ? — russata var. //, Stgr., loc. 
cit. Forewings uniformly suffused with rust-colour or reddish - 
ochreous. “ Ochraceis ” alone does not happily represent any Iceland 
specimen I have seen, but really ochreous ones probably occur at times 
(cfr. Mill., pi. v., fig. 10), and would be a sub-aberration of ab. 
ferruginea. The late Rev. F. A. Walker ( Ent . xxiii., 66) found this ab. 
a prevalent form in Iceland, though, of course, it varies much in detail, 
and only very few can be described as really unicolorous. He speaks 
of it as “ the Rannoch form,” but I have always associated it chiefly 
with Shetland, so far as concerns the British Isles. 
C. citrata ab. nigricans, mihi, n. &h. = russata var. /, Stgr., loc. cit. 
Forewings nearly unicolorous blackish. Perhaps this is hardly worth 
separating from ab. fusca. 
Milliere’s var. pythonissata has caused considerable perplexity, not¬ 
withstanding that it is a beautiful figure. The specimen from which 
it is drawn, was sent to him by Doubleday from Epping, but either 
Doubleday, with that regrettable carelessness of exact localities which 
characterised our British lepidopterists of the period, omitted to give 
any precise data, or else Milliere neglected to put them on record. He 
merely says it comes from England, where Mr. Doubleday has obtained 
a certain number of examples ex larva, and has sent him three, and he 
figures the $ (2c., iii., pi. iii., fig. 9) together Avith tA\ r o other bred 
specimens (from Epping larvae), received at the same time (figs. 7, 8), 
calling them all iunnanata vars., though the other tAA r o are quite 
familiar English forms of truncata (shoAving hoAV little perception 
Milliere had of the differences of the tAvo species!); his fig. 7, var. h 
(the varietal lettering carried on consecutively from his Iceland forms 
in vol. i.), is an extreme ab. russata, Schiff. —perfuscata, Haw., verging 
on the melanic ab. schneideri, Sandb., or nigerriruata, Fuchs, though 
with the him!wings hardly darkened; bis fig. 8, var. i, an ab. rufescens , 
Strom. The figure of var. pythonissata is rather dark, the central area 
rather variegated (hence Staudinger’s erroneous citation of it is to “ab. 
inartnorata, Haiv.,” and Gumppenberg’s still more erroneous sinking of 
it to passerana, Fir., as a marbled ab. of truncata .'); its outer teeth or 
lobes moderately produced, the hindAvings darkish, shoAving indistinctly 
a moderately angled, pale “ outer line,” and behind it, someAvhat more 
distinctly, a roAV of pale spots much as in the “ Arran truncata ” — con¬ 
cinnata, Steph., Avhich Avill be considered beloAV. It cannot possibly 
have been a London truncata, bred with the others Avith which it is 
figured; but it agrees so Avell with some of the more elongate-lobed 
examples of concinnata , Stph., that I should have referred it to that 
but for the fact that I find it ( concinnata ) is unrepresented in Double¬ 
day’s own collection, and it is most unlikely he would have sent aAvay 
his only one. The sole alternatEe, among known forms, is that it 
represents an Orkney or Shetland citrata {iunnanata), unusually free 
from the rusty tint in the subapical area, Avhich is dark, and richly 
velvety : and this is supported by the fact that Milliere mentions that 
one of his two females has the ground colour “ more Avashed with 
xviii. 
