RHYACIA. By Dr. A. Corti and Dr. M. Draudt. 
77 
Rh. pimicea Hbn. (Vol. 3, p. 45, pi. 10 b). The description of this species was incorrect. There is no punicea. 
trace of “olive” to be seen. The ground colour is a dull brown with violet-grey suffusion, the bands are a 
warmer rufous. 
Rh. marcida Christ,. (Vol. 3, p. 34, pi. 7 e). This should be classified here although it has such a different marcida. 
appearance. It is certainly no Euxoa. As the illustration was poor, we are giving a better one here (10 i). 
Rh. draesekei Corti (11 i). This resembles marcida, but is larger and differs by having a dark brown draesekei. 
dentate outer transverse line, oblique orbicular and dark claviform stigmata. It is not yet definitely certain 
where this species should be placed, but we are classifying it here. From China, the Western Mountains near 
Peiping. 
Rh. pelita Corti ined. (11 h). This fine species shows a close relationship to pachriobides. It is smaller pclila. 
and markings are brighter and more varied. The cell between the stigmata and also the space before the orbi¬ 
cular stigma are deep black, the central shade is narrower and more definite, there is a distinct subterminal 
line in the darkened postmedian area. Beyond same the marginal area is lighter and irroratecl with bluish grey. 
A small black dot at end of claviform stigma. Hindwings darker than in pachnobides. From Raddeffka. Type 
in the collection of Corti. 
Rh. exusta Btlr. (Vol. 3, p. 45, pi. 10 c). We are giving a better illustration of the form — nigromacuiata 
Graes (11 h). 
Rh. exustifonuis Mats. This is very closely related to exusta, but it is smaller, the markings of forewings 
are darker. Between the stigmata there is a dark brown quadrate spot. The stigmata themselves are indistinct. 
The wide postmedian band extends to centre of inner margin. Hindwings pale grey with 2 diffuse black-brown 
bands behind the centre. Fringes ochreous reddish. From South Saghalin in August. 
Rh. baja F. (Vol. 3, p. 44, pi. 9 k). — cinigera Filipp (11 h) differs by bluish grey instead of reddish dnigera 
brown ground colour of the type form. Size and markings are otherwise the same. The entire wing expanse 
is coloured a bluish grey in contrast to coerulescens Tutt in which only the costa and basal area are thus col¬ 
oured; cinigera occurs from Minussinsk to East Siberia (Sutschan). — nisseni Rothsch. (11 i) is the tunisian 
race, large, dull brown without the violet reddish tone of the main european type form. It has dull pale stigmata, 
very delicate transverse lines and with prominent; dark dots on the subterminal line. Ain Draham, Tunis. 
mgromacu- 
lata. 
exustifor- 
mi$. 
nisseni. 
guadarra- 
mensis. 
Rh. guadarramensis Bours. (11 k). This reminds one superficially both of brunnea and dahlii, also 
of festiva, but it is held by its author to be nearest to brunnea. Ground colour is a darker red, not such a 
violet brown. Apex of forewdngs is straighter, not “slightly falcate”. The postmedian area to the fringes 
is uniformly dark, the antemarginal area is no paler. At tip of claviform stigma the usual black dot. Orbicular 
stigma is large, almost quadrate, not paler than the ground colour. Between same and the reniform stigma 
which is filled with whitish at top and reddish brown below, the cell is dark. In front of the spotted pale 
subterminal line there are 3 small cuneiform marks. Hindwings brown with somewhat reddish fringes and 
dark central spot. From S. France, the High Pyrenees (Gedre, Heas) and Spain (Sierra de Guadarrama); 
from the middle of June till mid August. 
Rh. nebula Leech (Vol. 3, p. 46, pi. 10 e). In colouration and marking this reminds one very much of nebula. 
the form cinigera of baja, but it is paler grey and always larger. The illustration suffices. 
Rh. tarda Leech (Vol. 3, p. 46, pi. 10 f). The illustration in the Main Volume is too indistinct. We are tarda. 
giving a better one here (I 1 k). It is also known to occur at Sutschansk. According to Filipjev it should 
be placed as a synonym to dewitzi. 
Rh. dewitzi Graes. (Vol. 3, p. 47). We are now able to give an illustration of this small species (11 k). dewitzi. 
It reminds one less of polygona, than of tarda, the previous species. This appears only to be rather darker 
violet brown, whilst dewitzi is lighter red-brown with paler yellowish costal area. Probably both are forms 
of one and the same species. 
Rh. olivascens Hmps. (Vol. 3, p. 37, pi. 8 b). 
Rh. homochroma Hmps. (Vol. 3, p. 40, pi. 81). 
Rh. isochroma Hmps. (Vol. 3, p. 51, pi. 11 c). 
Rh. orphnina Pglr. (Vol. 3, p. 45). 
Rh. obuncula Hmps. (Vol. 3, p. 45, pi. 10 c). 
Rh. mandarinella Hmps. (Vol. 3, p. 45, pi. 10 c). 
Rh. ishidae Mats. The author compares this species to E. recussa, as however Corti does not place ishidae. 
same to the Euxoa, I am placing it here owing to its resemblance to the other members of this group. Fore wings 
