64 
RHYACIA. By Dr. A. Corti and Dr. M. Draudt. 
margari- 
tacea. 
abruzzensis. 
dequcidrata. 
p lira. 
signata. 
cyrnaea. 
montedoro- 
nis. 
vixsignata. 
gaurax. 
tamerlana. 
capnoptera. 
picata. 
caerulea. 
pallescens. 
depuncta. 
meridiona- 
lis. 
pontica. 
consenes- 
cens. 
obscura. 
kollari. 
plumbata. 
flammatra. 
centralasiae. 
obsoleta. 
herculea. 
stotzneri. 
Rh. niargaritacea Vill. (Vol. 3, p. 54, pi. 13 b). We are giving a better illustration (8h). Specimens 
from the Abruzzi are generally large, much paler, of nice whitish blue-grey colouration with snow white 
hindwings in the <$. This is certainly a good race, which should be separated as — abruzzensis /. n. — 
dequadrata Dhl. denotes specimens in which the cpiadrate mark between the stigmata is absent, whilst the 
remaining markings are distinct, in fact often they are especially bold. — In ab. pura Dhl., besides the quadrate 
mark between the stigmata, also the spots on costa, the transverse bands and rows of dots are absent, the 
specimens are therefore devoid of markings. Majella, Gran Sasso. — signata Wgnr. is the local race from 
Anatolia (Akshehir); it is blue-grey with much darker outer area, with distinct transverse lines and dark 
thorax. 
Rh. cyrnaea Spul. (fallen Pglr. i. 1.) (8h). Hitherto this has been held to be a local race of marga- 
ritacea, but an examination of the genitalia has shown certain differences, so that it must now be deem¬ 
ed a genuine species. It is darker, reddish brown and more richly marked with distinct transverse lines. 
Hindwings are darker, faintly clouded in more heavily so in $. Corsica. — montedoronis Schaw. denotes 
darker sandy grey specimens. — vixsignata Schaw. represents specimens with scarcely any markings and only 
faint indications of the two stigmata and spots on costa. 
Rh. gaurax Pglr. (Vol. 3, p. 54, pi. 12 i). We are replacing (8 f) the poor illustration in Main Volume. 
Rh. tamerlana Hmps. (Vol. 3, p. 53, pi. Ilk). Here also we are giving a better illustration (8g) 
by which the species can be distinguished. 
Rh. trigonica Alph. (Vol. 3, p. 47, pi. 10 g). The illustration is fairly good. Of — capnoptera Pglr. 
we are giving a good illustration (8f). 
Rh. picata A. B.-H. {= nona Obth.) (8f as “ nona”). A fine species, that is close to trigonica. Fore- 
wings soft pale grey with brownish sheen, delicate black barely dentate transverse lines, somewhat bolder 
subterminal line and the cell between the stigmata interfilled with black. Hindwings white, rather duskier 
at margin. From Algeria (Batna, Lambessa, Aflou). 
Rh. chaldaica Bsd. (Vol. 3, p. 53, pi. Ilk). The illustration is good but the contour is less so: we 
are giving another illustration of the form spodia Pglr. (10 g). — caerulea Wgnr. (8 g) is a pretty blue-grev 
race with velvety black cell spots and quite white hindwings, which occurs in September in Anatolia (Ak¬ 
shehir). 
Rh. insignata Led. (Vol. 3, p. 54, pi. 13 b). The illustration in Main Volume is somewhat too dark, 
the markings are however correct. — pallescens (8g) is now being illustrated. 
Rh. depuncta L. (Vol. 3, p. 44, pi. 9 i). Danneiil separates the more northerly german form with the 
rather paler grey ground colour, from the race that is typical from the South, especially the S. Tyrol. The 
latter has a more reddish brown, warmer tone. It seems to be more brightly marked because the basal area 
is dusted over with blue-grey and this contrasts with the darker brown median area. The race, which is also of 
slightly robuster build, he names — meridionalis Dhl. It occurs in especially dark specimens in the Hautes 
Pyrenees, whilst the Abruzzi specimens tally with the grey type. — pontica Stgr. we are illustrating (8 f), it 
is taken at Digne and also in Spain (Albarracin, Madrid). However I have also received from there the quite 
pale grey, almost ashy bluish or greenish form. We are giving an illustration of — consenescens Stgr. (8f), 
which is a transition form of rather brownish colouration. From Spain (Behar) captured by Fernandez. - 
obscura Glayhills is a very dusky, blackish suffused form, described from Finland. 
Rh. kollari Led. (Vol. 3, p. 44, pi. 9 i). The illustration is too heavy and colouration too uniform. We 
are therefore giving a better illustration (8e). — plumbata Btlr. This nice form, described from Japan was 
also obtained by the Stotzner expedition in Szechuan. We are also figuring this nice large form here (8 e). 
Rh. flammatra Schiff. (Vol. 3, p. 43, pi. 9 g). Corti evidently proposed to place this form immedia¬ 
tely here. All central asiatic specimens are smaller on an average, of paler grey-brown colour and the mark¬ 
ings with the exception of the black basal streak are more or less completely obsolete. This form is named 
centralasiae Wgnr. Dr. Corti illustrated on pi. 8 e a very similar specimen, which is named — obsoleta. 
I know nothing about its origin at the moment. On the other hand — herculea Corti i. 1. (?) (Se) is an 
exceptionally large, boldly marked form with deep black interfilled cell between the stigmata. Presumably 
it emanates from East Asia ? 
Rh. stotzneri Corti (8 h). A somewhat smaller dark species with narrower wings. Dark brown, costal 
streak paler; distinguished by the very dark colouration of the cell before and behind the orbicular stigma. 
The double transverse lines are interfilled with paler colour and also the subterminal line is paler. Clavi- 
form stigma has a black surround. Forewings pale grey-brown, still lighter towards the base. Ta-tsien-lu 
(Szechuan). 
