55 
Oiwake, Yokohama, Kiushiu, and Moupin. The cinereata form is 
represented by specimens from Nemoro, Shikotan, Kiushiu, and 
Che-tou.” South {Rut., xxxi., p. 5) says, “This species is represented 
in east Siberia, Amurland, Isle of Askold, Japan, Yesso, Kiushiu, and 
western China, by forms that are somewhat similar to, although not 
exactly identical with, some of those occurring in Europe but I am 
not at all satisfied that anything I have seen from Japan or China is 
really referable to truncata; it will be remembered that my own 
examples have been referred to citrata, and the variable series at the 
British Museum consists mainly of undoubted citrata, and forms like 
cinereata, Moore. The occurrence of truncata in North America, also 
sadly lacks confirmation. The very characters that Packard (Mon. 
Geom. U.S., p. 107) gives for the recognition of his truncata, “ the 
acute forewings .... the acute jagged projections of the outer 
line extending out farther than usual,” are suggestive of citrata: his 
figure (pi. viii., fig. 38) represents this latter in the ordinary eastern 
American form, and his “ var.” (fig. 40) is also quite unlike any trun¬ 
cata known to me, and, moreover, is said to have the hindwings un¬ 
usually pale. There is, to be sure, a very British-looking specimen of 
truncata in the British Museum collection, labelled St. Martin’s Falls, 
but I am so constantly coming across British forms (unknown else¬ 
where in America) so labelled, that I feel sure that consignment got 
mixed either before, or when it was presented to the Museum. The 
only local form or “ var.” which I will venture to introduce as un¬ 
doubtedly belonging to truncata is the following : 
Var. olirescens (Warr., MS.), mihi, n. var. (?=var .infuscata, Tgstr.). 
Mr. Warren had, as I mentioned earlier, given this name in the 
British Museum collection, to the form of truncata from Finland and 
Lapland. As Tengstrom’s description does not fit it well, I prefer to 
conserve, for the present, the name of “ var. olirescens.” The light 
part of the forewings (central area and shade behind elbowed line) are 
slightly yellower than usual, and (especially in the Lapland examples) 
sufficiently dusted with fuscous to produce the olivaceous aspect which 
has been noted. The inner sienna band is wanting, the outer one dull, 
interrupted, inconspicuous, being also dusted with the fuscous. The 
hindwings dusky, slightly olivaceous. My single northern example 
(from Abisko, Tornea Lake, kindly given me by Mr. H. Rowland- 
Brown) is transitional towards this variety, the pale central area 
being less dusted, and the inner sienna band present, though dull, yet 
with the general olivaceous tone quite appreciable. It will require a 
much larger amount of northern material to ascertain the true relation¬ 
ship of “var. infuscata,” “var. schneideri,” and “var. olirescens if 
all the forms from far north have mainly the same characteristic, it is 
clear that the oldest name, var. infuscata, will cover them all, and if 
schneideri was somewhat darker, it will merely be as an “ aberration.” 
Schneider (Trows. Mus. Aarsh., xv., p. 71) says, Arctic truncata average 
25mm.-30mm., and present a tolerably typical appearance, with a 
tendency to develop a somewhat darkened central area. Thus, he 
neither mentions any “ cferulescent ” nor “ olivaceous ” tinge. He 
records also “ ab. comma-notata, Wood” (rufescens). 
I have discussed the last-named form earlier, as in the present 
state of our knowledge it seemed to me oftenest a mere aberration ; 
xviii. 
