Publ. 26.1. 1032 
EUXOA. By Dr. A. Corti. 
paler, whilst being darker in outer area. Underside of hindwings with heavy discoidal spot and a dark arched 
stripe. A very variable species. Semipalatinsk, Siberia (Kozhantsciiikov), Aksu, Issky-kul, Ulias, Turke¬ 
stan (Corti). 
E. phantoma Kozh. According to Kozhantschikov himself this can scarcely be differentiated from phantoma. 
adumbrata Ev., nevertheless he separates same on account of minute differences in the E genitalia and because 
of the erroneous impression that islandica and adumbrata have filiform antennae. In my opinion certainly 
synonymous with adumbrata. S. E. Siberia, July-August. 
E. sjostedti Corti (4 e $ cotype). Outwardly resembles obscura Brahm but it is a genuine Euxoa. Fore- sjdstedii. 
wings reddish brown with faint dark markings. Basal line and streak barely visible, inner tranverse line double, 
heavily dentate, claviform stigma indistinct, orbicular stigma large sometimes filled with greyish white, reni¬ 
form stigma very large. Outer transverse line dentate. Hindwings pale grey, much adumbrated towards 
outer margin. A distinct discoidal spot. Underside almost unicoloured grey-brown. A large pale brown 
discoidal spot on hindwings. Kamschatka, August. 
E. polygonides Stgr. (Vol. 3, p. 28) (4 e E)- Compare under adumbrata. Antennae considerably more P°hi- 
shortly serrate and ciliate than in adumbrata Ev. Pale grey-brown, lines very clearly outlined. Sagittate marks 
present. — ab. obscura according to Staudinger denotes dark specimens. Caucasus, Issyk-kul, Ili (v.). obscura. 
E. tritici L. (Vol. 3, p. 32, pi. 6 k). On account of the extraordinary degrees of variability in colouration tritici. 
and marking, this is a very difficult group of forms. A great number of aberrations have already been named 
as will be seen from main Volume. A few of these aberrations may prove to be species, tritici also seems to form 
fairly constant variations and local races. The following remarks should be made to the aberrations enumerated 
in main Volume: — aquilina Schiff. is a separate species, also eruta Hbn. and siliyinis On. ; detorta Ev. and varia 
Alph. do not belong to tritici but to the Sub-Genus Mesoeuxoa ; — disiincta Stgr. is a form of aquilina, similarly 
ab. obscurior Stgr. The other denominations of aberrations by Tutt and other english authors appear to me 
absolutely unjustified, as they only refer to quite unimportant colour and marking aberrations and cannot be 
clearly separated from one another, subgothica Hw. (to be changed into pseudogothica according to Curtis) is 
perhaps a geniune local race in England and possibly also sagittifera Step}). (Vol. 3, p. 32). —• v. (?) pseudo- pseudo- 
gotllica nom. nov. Curtis (4 e $) is smoky grey to grey-brown with pale costal margin with whitish spots on same; gothica. 
—■ sagittifera Steph. (4 e) is similarly pale with black or very dark cell between orbicular and xeniform stigmata sagittifera. 
and with pale costa. — ab. obelisca Steph. and other british*authors (Vol. 3, p. 32) is not clear to me, it might obelisca. 
actually possibly be obelisca Schiff. The subdivision of tritici forms is so difficult that I will limit myself to the 
description of a few forms which appear to me to be definitely genuine races. — irssulana /. nov. (4 e p type) is insulana. 
a very characteristic form of the Isle of Sylt, which at first glance has great similarity with agathina Dup. Dark 
red-brown, paler costa, with white dots, orbicular and reniform stigmata pale, filled with whitish, encircled by 
black, the space between the stigmata dark. Claviform stigma dark, subterminal line whitish, sagittate marks 
usually present. Hindwings white, dusky at margin and on veins. Isle of Sylt, July. — r elsseri /. nov. (4 f E reisseri. 
type). Pale grey-brown, costa paler to whitish. Reniform and orbicular stigmata whitish, cell between them 
dark, claviform stigma large, brown with dark edge, obliquely downwards from same a pale brown stripe, 
median nervure whitish, marginal area darker, sagittate marks present. Hindwings pale grey-brown with 
white ground, a dark marginal line, fringes white. Discoidal spot is absent or exceedingly faint. Sierra Nevada, 
Spain. — ab. fumosoides Culot (Oberth. i. 1.) is a dark red-brown simple colour aberration from Brittany. fumosoidcs. 
E. crypta Dadd (4 f E)- Very similar to tritici L. but smaller, wings with a red, violet-red or bluish slate crypta. 
tone to ground colour . Thorax generally darker than wings. Markings more or less as in tritici. Wing contour 
shorter and wider. Hindwings darker than in tritici. In colouration more like obelisca Schiff. than tritici. On the 
wing later than tritici, chiefly in 2nd and 3rd week in August. E genitalia do not differ from those of tritici. This 
species requires further investigation. From around Berlin, Pomerania, E. Prussia, August. Early stages 
unknown. 
E. eruta Hbn. (Vol. 3, p. 32, pi. 6 k). Very probably a genuine species and not merely a form of tritici. eruta. 
In the Valais it is more frequent than tritici ; in many districts where eruta occurs, tritici appears to be absent, 
for instance in some of the valleys of the Tyrol. On the other hand eruta seems to be absent from Spain and 
Italy. The exact distribution has still to be ascertained. Ova irregular, unicoloured yellowish white, without 
grooves. According to Vorbrodt larvae are larger and darker than those of tritici. In certain respects it differs 
in its biological characteristics from other Euxoa (Corti). Pupa red-brown in a frail cocoon, with 2 cre¬ 
master spines. 
E. siliginis Guen. (Vol. 3, p. 32) (4 f E)- Clearly a genuine species. Ground colour mouse-grey, somewhat siligmis. 
brownish in patches, colouration and marking uniform, sometimes stigmata stand out whitish. Outer transverse 
line double, dentate, frequently a marginal line of small black lunules is present. Claviform stigma is absent, 
Supplementary Volume 3 5 
