Annals of the Transvaal Museum 
153 
prising Galona and Amyops which preserve the areole whilst the palpi become 
much reduced; in Amyops the median spurs of the hind legs also disappear. 
Group VII. 
This may be called the Scrancia group, comprising six genera. It may have 
originated somewhere near Chadisra , the similarity in structure and the ten- 
dency of the fore wing to be narrow, pointing to this. But here the hind wing 
is ample and remains usually so, while the rather long legs, especially of 
Scrancia, are extraordinary features in the Notodontidae. I think that 
Phycitimorpha is the oldest genus and from it two branches have developed: 
the “Scrancia” branch, in which the proboscis remained, and the “ Breyeria” 
branch with this organ lost to its three genera. From Scrancia, Taeniopteryx 
may have developed, judging by (1) the coalescence of the areole of the fore wing, 
(2) the stalking of vein 6 to the stalk of 7-10, (3) the obsolescent vein 5 in the hind 
wing; a puzzling feature is, however, the rather long process of the fore tibia 
which in Scrancia is short and broad. It is remarkable that in Breyeria this 
process is also longer than in Scrancia, even longer than in Phycitimorpha', 
further the members of Breyeria lack a proboscis, have reduced palpi and 
much broader fore wing than those of the Scrancia branch. The members of 
the genus Stenostaura are remarkable for (1) the stalking of veins 3 and 4 in both 
wings, (2) the absence of the median spurs on the hind legs, (3) the shorter 
piocess on the fore tibia, and (4) their palpi. In Eurystaura on the other hand 
the areole is lost by coalescence, vein 5 of the hind wing becomes very faint 
and the process of the fore tibia is much shorter than in Breyeria. 
Group VIII. 
This I call the Notoxantha group. It comprises as many as eleven genera, 
several of which have a more or less developed bar in the hind wing. The group 
originated somewhere near Antheua, Zana in particular closely resembling 
Antheua. Notoxantha shows several generalised characters but is probably not 
quite like the form from which the others must have come. Crambometra is 
peculiar for the well-developed branches of the antennae; the venation of the 
fore wing resembles Notoxantha, but in that of the hind wing vein 5 is reduced; 
the genus Campyloctys is closely allied to Crambometra as is clearly indicated by 
the antennae, but the venation of the fore wing is remarkable, as veins 8 and 9 
have become separated, thus doing away with the areole and causing 7 and 8, 
9 and 10 to be stalked; here also the palpi are more porrect. Zana may have 
originated directly from Notoxantha, the spurs are shorter, the bar of the hind 
wing is less distinct and the palpi are more reduced and porrect. Ramesa stands 
more or less alone by the peculiar development of tlie antennae, but the fore 
wing agrees in venation, but not in markings, with Notoxantha. 
Polienus and Prionocentrum come somewhere before Pydna, but the 
relation of both these genera is not quite clear to me; on the whole Priono- 
centrum is a rather peculiar Notodontid. 
The peculiar reduction in the Pydna branch is the disappearance of the 
areole through anastomosis of the greater part of vein 10 with veins 6, 7, 8, 9 
(in P. rubrifascia, indeed, it can be seen how the areole disappeared) ; all other 
characters are remarkably like those of Notoxantha except that the frons is 
smooth. Polelassothys has (1) the palpi very much reduced, (2) only two spurs 
on the hind tibia, (3) vein 8 of hind wing coalescent with nearly the whole of 
the upper median; this last feature is particularly interesting. 
The genus Anaphe may have originated from Pydna, although the reduction 
of the spurs as between these two genera points to one or more intermediate 
