188 
HABROSYNE; THYATIRA. By Dr. A. Seitz. 
it represents there the Japanese consimilis Warr., in a similar way as in northern Central China where same 
is replaced by commifera Warr. (Vol. 2, p. 322, pi. 55 m). 
3. Genus: Habrosyne Hbn. 
A description of this Genus is given in Vol. 2, p. 322 and Vol. 10, p. 658 to which reference should 
be made. Houlbert divides same into two groups, of which the one ( Habrosyne) represents the european 
form, whilst the other ( Goniloba ) groups the asiatic forms together. Besides these there are a few american 
species. 
H. derasa L. (Vol. 2, p. 322, pi. 49 d). According to Houlbert’s investigations, this species is identi¬ 
cal with Phalaena pyritoides Hfn., which was published a year before Linne’s derasa. As a re-denomination 
would lead to an immense amount of confusion, we are retaining the name as a “nomen conservandum”. 
H. derasoides Btlr. (Vol. 2, p. 323). In Vol. 2 three illustrations were given to represent this species. 
On pi. 55 m two smallish specimens were shown. The third picture (49 d) is correct as regards size, but 
according to Hotjlbert it does not show a genuine derasoides , but rather an aberrative derasa. Meanwhile 
although there is a good deal to be said on the subject, there may be some doubts as to whether derasa 
and derasoides are genuinely separate species. Compare in this regard Gaede's remarks in Vol. 10, p. 685. 
Contrary to the opinion of Warren, Dalla-Torre and Gaede, Houlbert considers the Indian fraterna to 
be not identical with derasoides and in fact he deems them to belong to different Genera. 
H. thibetana Houlb. Differs from our illustration of derasoides (Vol. 2, pi. 55 m) by its considerably 
larger size and the reduction of the costal streak on fore wings which is only prominent in its outer part. 
Idle pale oblique stripe, which outlines the basal area is more irregular and a clearer white. In spite of 
these differences we consider thibetana to be only the representative of the european derasa in certain districts 
of Central Asia. 
petrogra- ^ H. petrographa Pouj. 1 his form, the name of which was erroneously misprinted as pterographa in 
Vla ' Vo1 - 2 > P- 323 > is according to recent researches a separate species from indica Mi. (Vol. 2, p. 323, pi. 55 n ). 
H. dieckmanni Graes. (Vol. 2, p. 323, pi. 49 d). Houlbert creates the new Genus Cymatochrocis for this 
species, but indicates no structural differences between the two Genera, but only those of the markings. 
roseola. H. roseola Mats, is unknown to me. The Japanese manuscript in which the species is described was 
not available to me. 
4. Genus : Tliyatira Hbn. 
Here also Houlbert separates various species into different Genera. For instance Th. opalescens Alph. 
and ornata Leech (Vol. 2, p. 325, pi. 55 n) are placed in a new Genus Psidopala Houlb. In this Genus the 
costalls (vein 8) of hindwings approaches and for a stretch extends alongside of the subcostalis (vein 7), 
though they do not actually anastomose as in the peruvian Genus Oiozona Drt. (Vol. 6, p. 1010, pi. 154 b), 
which creates a connecting link between the Notodontidae and Cymatophoridae. The creation of this 
Genus has certain justification. For the next two nearest related species, Th. apicalis Leech and tenuis 
bmps. (Vol. 2, p. 325, pi. 56 f) which differ from the others by their very delicate bodies, Houlbert proposes 
the generic name Psidopaloides. 
Th. batis L. (Vol. 2, p. 323, pi. 49 e). Further forms have been denominated: conflua Rbl (= con- 
C ° nt fluens Marschner nec Reuter, variabilis Trnr.) is a form, in which the costal spots conjoin with the large 
albipuncta- spot at anal angle and there are often also connections with the other spots of forewings. - albipunctata Splr. 
has . a few white clots along the dark irregular line between the two outer eyespots. ° These can be held to 
indicate the white line that occurs in other Cymatophoridae, for instance in Gonophora grisescens (Vol 2 
indccorata. p 326, pi. 49 e) or Thy a lira apicalis (Vol. 2, p. 325, pi. 56 f). indecorata Trnr. denotes specimens from South 
dcrosea. Wales and North Ireland in which the rose colour of the eyespots is replaced by dull ochre -— ab derosea 
plmea. Maur. has ivory yellow eyespots and darker ground colour. - phaea Did. has the rose shade of eyespots re¬ 
placed by a dull olive brown; these are described from the South Tyrol, Meran (Lana, Terlan), but also oc¬ 
cur elsewhere and probably are scarcely distinguishable from indecorata. 
I h. cognata Mr. (Vol. 2, p. 323, pi. 49 e). British authors consider this a geographic form of the euro¬ 
pean bahs, Houlbert however deems same to be actually a separate species. It is limited to Kashmir and 
the adjoining Himilayan regions; a similar form —- vicina Gn. — occurs in Java. 
Th - dinnnuta Houlb. (14 a). This somewhat resembles batis (Vol. 2, p. 323, pi. 49 e) and cognata (ibid.), 
but the beautiful peach red eyespots are situate further from one another; an oval spot occurs in centre of 
costa and a similar one in the middle of the inner margin; ground colour between the spots is a purer brown 
Otherwise it most closely resembles decorata Mr. (Vol. 10, pi. 85 a) from North India and Formosa. — It 
