Publ. 25. I. 1932. 
HYPOGYMNA; ORGYIA. By M. Gaede. 
97 
The pale subterminal line is whitish anteriorly, behind the point of the outer line it forms a semicircle, then 
vertically to median nervure, there almost horizontally inwards and then again straight down to the innei 
margin. Hindwing paler reddish brown with discoidal spot and 2 outer dark lines. 35 mm. I a-tsien-lu. 
Type in the British Museum. 
4. Genus: Hypogymna Hbn. 
H. morio L. (Vol. 2, p. 116, pi. 19 a). According to Staitder the form natlyi Aign. mentioned in Vol. 2, 
occurs in arid localities. Specimens from moist meadows are usually glossy black. In Weis Stauder found 
30% of the SS with falcate outer margin to fore wings, in the $ the hindwings can be undeveloped and deformed, 
this form is named falcata Std. — The other new names given by the same author refer to colour variations falcaia. 
such as can always be obtained by breeding en masse, but which do not occur in nature. — eburnina Std. $ eburnina. 
has an ivory coloured streak, which many specimens show in the middle cell of forewings, extended almost over 
the entire forewing, sometimes even it is continued on the hindwing. — In normal the fringes of forewings 
are blackish brown, in illustreciliata Std. they are buff to golden. — When the fringes also of hindwing are like lll “' reclUata 
this and costa and inner margin are yellow, similar to Org. aurolimbata, the form is named omninolimbata Std omnino - 
A colour variation that can occur in all dimorphous species, viz: a ^ in the colouration of the $ is named limbaia. 
femiraicolorata Sdt. It is completely yellow brown like the ^ and is naturally very rare. The reverse foim, viz. femini- 
the $ with the almost black normal G colouration is named defuncts Std. and is also very rare. An extieme ^ unc ^ a _ 
form of illustreciliata, which however is only known in the § an d in which all the wings are glossy golden 
vellow is named aureomicans Std. These seem almost too many denominations for such an insignificant species, aureo- 
mxcans. 
5. Genus: Orgyia 0 . 
0. gonostigma F. (Yol. 2, p. 117, pi. 19 a), flavescens Masl. denominates the rare $ with yellowish white flavescens. 
in place of the normal dark brown hairs. It is only obtained by breeding and may therefore be a pathological form. 
0. antiqua L. (Vol. 2, p. 117, pi. 19 a). The form grisea Denso (8 d) has been observed to occur for a time grisea. 
around Dresden. The antennae of the A are somewhat larger and with longer pectinations than customary 
in antiqua. Also the grey colouration produces a similarity with the north american (. Hemerocampa) leucostigma 
(Vol. 6, p. 537, pi. 72 a) which also has the faintly developed spot at anal angle of forewings. But markings are 
identical with those of antiqua, only the brown patches are replaced by paler or darker grey. Also on underside 
all the brown is replaced by grey. — We are illustrating (8 c) a specimen of zimmermanni Grass., from E. Thibet 
in the collection of OhERTHUR. This species was dealt with in Vol. 2. Our illustration shows fringes of forewings 
with pale spots, which should not be so according to the description. The pale spot at anal angle is missing. 
It may be considered a transition form. Two pairings from captured $ with the $ of thyellina did not produce 
the same results. In anthyellina John the $ is much more like thyellina, but the bluish submarginal spots are ant- 
absent as well as the bluish sheen to forewings. A similar hybrid was subsequently named wintersteini Wohnig. ye " HL 
The <$ of this experiment is halfway between the parent forms. From this description one can suppose that the 
form differs from anthyellina, but all other particulars are missing. Both authors state in regard to the $ that 
it is larger than the parent forms. — leucasitiqua Klemann is a hybrid of the american leucostigma with antiqua $. leuc- 
The S is of the same size as the parent forms, the ground colour is paler or darker brown and the area between 
the bands is paler towards costa, sometimes even being whitish. The outer margin is often very dark, the usual 
white spot there very distinct, but smaller than in antiqua. The $ has a dark central dorsal line. 
0. immaculata sp. n. (8 d). Probably closely allied to antiqua.' Hindwings somewhat darker than immacu- 
forewings, which are only so pale in the specimen illustrated, the other 2 are darker and therefore the lines aie 
somewhat less pronounced. In the latter the inner and outer lines are about as curved as in antiqua and the 
outer one has a third parallel line a small way off. The small dark reniform stigma with pale centre. In a very 
dark specimen it has a pale halo. A white anal spot is absent. $ 26 —28 mm. Chefoo. Type in the Berlin Museum. 
0. trigotephras Bsd. (Vol. 2, p. 117, 19 b). A hybrid of the race Corsica $ with trigotephras $ produced 
specimens that had a greater resemblance to trigotephras and were somewhat larger than same. The dark brown 
ground colour is a little paler, due to inherited characteristics from Corsica. The transverse bands are somewhat 
more distinct, like in Corsica. One can say that the hybrid gadollae Wgn. is a larger pale, more clearly marked gadollac. 
trigotephras. The $ shows no special characteristics. — dilutior Bub. is a paler form of Corsica Bsd. or ramburi dilutior. 
Mob., which the author deems to be different. It is like the ericae var. intermedia Friv. (Vol. 2, p. 118). The 
inner marginal spot on forewings is distinct and an obsolescent reniform stigma with dark outline is apparent, 
costa almost devoid of markings, size normal. It occurs chiefly at lower altitudes up to 700 m, at greater 
Supplementary Volume 2 ^ 
