226 
ADDENDA AD STERRHA. By L. B. Prout. 
ausiriae. 
ccnspersa. 
domesiica. 
hercyniae. 
pallidaria. 
griseospersa. 
britanniae. 
tenuis. 
anastomosa- 
ria. 
nigrescens. 
nigra. 
obscura. 
dirutaria. 
joannisiata. 
obscura. 
striolaia. 
metohiensis. 
antiopa. 
(Piedmont). — austriae L. Mull. Clay-yllowish or (perhaps predominantly) straw-yellow (compare ab. aurato , 
above), weakly irrorated; markings complete and distinct. It is the homozygote yellow form of the Austrian 
race: the Wachau of Lower Austria, near Diirnstein and Stein. — ab. conspersa L. Mull, is a modification 
of austriae, a heterozygote yellow form, more strongly irrorated, almost as frequent in breeding as the name- 
type, obtained chiefly in crossing the latter with ab. domesiica. — ab. domestica Klimesch (5 i) is the “homo¬ 
zygote dark form'' of austriae, recessive thereto and not yet observed in the wild state.- hercyniae L. Mull. 
Usually very yellow, weakly irrorated, the markings even sharper than in austriae: single specimens somewhat 
paler. Approximately half the examples have the head and patagia orange-yellow, a peculiarity not 
yet observed in any other race. Harz Mountains. From the Erzgebirge and Sudeten the little material yet 
known is inadequate for any generalizations. Should the latter courtry produce a separate race, the nomen¬ 
clature will be upset (see above, on Wocke's type). pallidaria A. Fuchs (17 c). This has now been taken 
and bred in sufficient numbers to confirm its racial character (compare p. 56), though aurata occurs as an oc¬ 
casional aberration amongst it. Further localities have been added, particularly Sierra de Gredos (Castile) 
and San Sebastian. — ab. griseospersa L. Miill. “Heterozygote light form” of pallidaria, “more strongly dark- 
sprinkled”. britanniae L. Mull. The homozygote yellow form of England” ‘ [Wales], Markings complete and 
distinct, well expressed but not thickened, dark grey or blackish; dark irroration fine, mostly sparse (in one 
example rather stronger); light subterminal markings more extended, clouding on terminal area mostly like¬ 
wise weak, grey, in their general effect, therefore, not darkened. Penmaenmawr. — ab. tenuis L. Mull. A very 
delicate sub-form, general impression still lighter, markings (except the cell-dots) much weakened and-especially 
on the hindwing — reduced. Recalls the ab. dirutaria of the Rhine race. Penmaenmawr, figured by Buckley. 
ab. anastomosaria {Prout) L. Mull. Median shade of forewing displaced proximad, in part confluent with 
the antemedian. A $ in my collection, taken at Penmaenmawr. — ab. nigrescens L. Mull. The heterozygote 
dark British form. Dr. Muller says that this bears no near resemblance to obscura A. Fuchs, to which it has 
hitherto been referred. Dark grey, with a slight brownish tone, scaling coarse, but sometimes sparse (terato- 
logical?), so that the wing-membrance appears to show through. The normal transverse markings always 
present, but inconspicuous, the costal spots and median shade generally the most distinct; cell-dots concolorous 
with the other dark markings, never deep black; spots of distal area light grey-brownish (never yellow), often 
somewhat enlarged, but never standing out very sharply. Penmaenmawr, well known to breeders of the species. 
- ab. nigra L. Mull. “The homozygote dark form of England” [Wales], formerly united with the preceding. 
Muller had no absolutely assured material available and admitted that an exact delimitation and description 
were therefore not yet possible, but named it (citing a figure of Buckley's) on account of its different germinal 
constitution. Probably somewhat smaller than nigrescens, much darker, the dark markings just perceptible; 
the light spots of the terminal area of the forewing “seem wanting” in Buckley's figure [not absolutely. 
L. B. P.]. - obscura A. Fuchs (Vol. 4, p. 105). By Muller's analysis, this Middle-Rhine race is split up into 
obscura (the heterozygote dark form), “mut." dirutaria Fuchs (the homozygote light form) and fuscalata A. 
Fuchs (the homozygote dark form) . The race is nearest to britanniae and the two are assumed to have had a 
common origin; they agree in having retained dominant n i g r i s m , while in all the other Central 
European subspecies there is substituted recessive m elan is m. It is, however, remarkable that in the 
present race the heterozygote is quite the prevalent form. ab. dirutaria A. Fuchs is the palest known form 
of eburnata, the ground-colour more whitish yellow, the irroration sparse, the markings weak. Apparently 
extremely rare in a state of nature, occasionally obtained in breeding the subspecies obscura. 
p. 56, to S. joannisiata Homberg (18 h). By an oversight in the editing, a Sierra Nevada $ (ibericata) 
was substituted on PI. 6 i for the “paratype” $ (from Le Vernet, Pyrenees-Orientales) mentioned in the text. 
This deficiency is now rectified. 
p. 56, to 8. libycata. ab. obscura (.Andreas MS.) Brettschneider . Almost totally melanic, with light 
macular band in distal area and light fringes, quite as in eburnata, ab. domestica: scarcely recognizable as libycata 
except by its shape. Philippeville, one specimen. Perhaps this was suppressed by Andreas in favour of ab. 
dimeglionaria, although the description suggests a more extreme development. 
p. 56, to S. striolata Stgr. (18 f). Wiltshire has taken 2 of this little-known and apparently variable 
species on the Dog River, Lebanon, and we are able to figure one which he has presented to the British Museum. 
Besides its dark colour and stronger, more oblique median shade, it differs apparently from pectinata in the 
still more slender pectinations of the A antenna. 
p. 56, to S. metohiensis Rbl. It should have been added that this species is recorded also from Bosnia 
and from Macedonia; from the Suchodol Valley, Pirin Mountains, in the latter country, Buresch reported it 
in 1919. — Much more recently has been added: ab. antiopa Reisser. Upperside of both wings as far as the 
subterminal unicolorous black, with no markings except the cell-dot, marginal area bone-yellow. Pirin Moun¬ 
tains, Bulgarian Macedonia. 
