6 
OXYCESTA; EOGENA; SIMYRA. By Dr. M. Dkaudt. 
alba. 
ivaulersi. 
bclulae. 
uniformis. 
umbrosis¬ 
sima. 
ussuriensis. 
grisescens. 
suzukii. 
umbrosa. 
serratae. 
conta- 
minella. 
moltrechti. 
autumna. 
specimens occur at Dombresson having a dark black-brown discal area; they resemble umbrosissima which 
however is considerably larger and browner. — ab. alba Der. is a $ with grey-white instead of red-brown body 
and a similarly coloured basal area. On the other hand however it has a black-brown marginal spot on fore wings; 
hindwings also are paler, fringes grey intersected with white. — ab. wautersi Dufrane is smaller by y 3 rd: the 
pale grey area between the postmedian and the fringes is red-brown, the discal area is sharply outlined with pale 
brown. Described from 3 specimens from the neighbourhood of Antwerp. - betulae Lenz is an aberration of 
the larva not of the imago. They were found in upper Pomerania on birch and it is to be presumed that this 
form will be occasionally found elsewhere; the larva is of violet-black colour having warts with white hairs and 
a white lateral row of spots; the lateral hair tufts on the 1 st and on the 11 th segments are black, the bristles 
on the 4th and 5th segments are rusty red. — The following local forms are established: — uniformis Trti. from 
Calabria with uniform brown ground colour in contrast to the uniform grey of avellanae or mus; only the outer 
edge of the reniform mark remains light. — umbrosissima Trti. is a much larger form from Sardinia; the dark 
outline of the brown basal area is more pronounced, forming a deep dark brown triangular discal band. It 
occurs in April in fairly high altitudes (Mte. Gennargentu) up to June. — subsp. ussuriensis Karel, differs 
distinctly from european forms by the anterior transverse line which is situated further from base, it has a 
narrower grey-black discal band which has no brownish yellow colour and there is a shadowy transverse band 
reaching to the reniform stigma; marginal area is paler than typical specimens, orbicular stigma with black 
spot, reniform stigma pale, hindwings and fringes unicoloured grey-brown. From Narva and Vladivostok in 
June. — ab. grisescens Karel. : occasionally among the same quite pale grey specimens occur with very fine 
transverse lines and reniform stigma without central dot and quite pale hindwings, which differ from the 
similar mus by the light basal area and the paler reniform stigma. 
C. suzukii Mats. (= sugitanii Mats, in tab.) (1 a) is very close to coryli. Frons, neck and palpi are black- 
brown, fore wings dark grey with dark black-brown transverse lines, the anterior one almost straight only 
somewhat bent below the costa, discal line undulate bending out considerably from inner border of reniform 
stigma. The narrow posterior line is almost parallel to the discal line, all 3 expand at the costa; subterminal 
area dusky, the undulate marginal outer border black-brown, edged with whitish posteriorly, similarly a fine 
marginal line; the black-brown fringes are intersected by white at the extremities of the veins; the costal 
margin is white to beyond the small indistinct orbicular and the whitish reniform stigmata. Hindwings dark 
grey. Expanse 28 mm. Described from a $ from Honsho (Kyoto). 
C. umbrosa Wilem. Forewings grey, the basal %rds dusted with brown, outer edge oblique; marginal 
area dusted with black-brown; the anterior irregular transverse line blackish, the posterior one undulate being 
bent round the end of cell; an undulate subterminal is indistinct, both stigmata circumscribed by black; hind¬ 
wings blackish brown. Wing expanse 34 mm. Smaller than mus which it resembles, the posterior transverse 
line being of different formation. Japan. 
8. Genus: Oxycesta Hbn. 
0. serratae Zerny (= geographica var. Zap. y Korb, chamaesyces Ghapm.) (1 a). Ground colour darker 
olive-brown than geographica and has more pointed transverse lines with deeper dentations and much darker 
grey hindwings especially in the whilst in the they have whitish patches at the inner margin and in the 
dentate postmedian. Considerably larger than chamaesyces, with wider wing contour and more varied pronounced 
markings and more distinctly checked fringes. The genitals of the 2 species are also different. It occurs in May 
and beginning of June in Aragon. The larvae feed together in June and July in open sunny spots on Euphorbia 
serrata. 
9. Genus: JEogcna Gn. 
E. contaminei Ev. — ab. contaniinella Strd. from S. Russia has pale reddish hindwings, they are 
somewhat darker in marginal area but without brown colouration. 
11. Genus: Simyra 0 . 
S. moltrechti 0. B.-H. (1 b) apparently closely resembles bilttneri, the wing contour is somewhat shorter 
and wider, ground colour of forewings pale yellow, more whitish at base, sparsely and finely sprinkled with 
black. An outer transverse line is indicated by minute dots on the veins forming a wide arc around the end 
of cell. Hindwings grey traversed from base to margin by brownish longitudinal streaks. Wing expanse <$ 26, 
$ 24 mm. From Sutschansk (S. Ussuri), captured in August. 
S. autumna Ghret. is classified behind dentinosa, which it resembles. Apex of forewings somewhat more 
rounded than in other species. Red-grey, veins black or blackish with traces of 2 transverse lines, these extend 
very obliquely to dorsal half of the wing and end at the inner margin in y 3 rd and %i'ds with 2 spots; in the 
