MICRATTACUS. By Dr. A. Seitz. 
517 
common than in Kuang-Tung. There the larvae ripe for spinning are drowned, the spinning gland softened in 
vinegar and extended to threads which are highly appreciated as fishing-lines; this has been the custom in 
China for many thousand years, thus longer than the working up of the cocoons into silk threads. — The larva 
itself has longer and more strongly bristled tubercles than the larvae of Saturnia and lives on various foliage-trees. 
16. Genus: Micrattacus Wkr. 
I add here a lepidopteron which is unknown to me in nature and which was probably either wrongly 
listed or the patria of which was incorrectly stated. The genus Micrattacus is otherwise purely neotropical and 
it is quite improbable that a genuine Micrattacus should exist in Borneo. 
M. sesostris Vuill. Expanse: 33 mm. Forewing above brownish-black with very indistinct ash-grey sesostris. 
spots, the distal margin and the region around the anal angle being of a lighter red. Hindwing chocolate-brown, 
apex of dorsal margin more red, fringe darker brown than the rest of the wing. Beneath the same, but the 
marking on the forewing is still hazier, the colouring of the hindwing still lighter. Body and antennae chocolate 
brown, apex of abdomen somewhat lighter. Labuan (Borneo). 
Additions 
to the Inclo-Australian Saturniidae. 
The imago figured as simplicia on pi. 53 a is an African species which Maassen & Weymer by mistake 
stated to originate from Asia. The figure represents a form of the purely African persephone-group (cf. Vol 14, 
p. 324, pi. 52). 
P. 500. From the Sumatran form of Actias maenas, saja v. Eecke, Bouvier detaches another Sumatran 
form (North Korintji Valley) with more pointed forewings and a quite rectilinear distal margin of the forewing 
in the In the $ the interior transverse stripe of the fore wing is said to be much nearer to the base of recta. 
the wing; = recta Bouv. 
P. 502. From the Coscinocera likewise new local forms are being continually detached and denominated, tltanus. 
for instance a form allied to hercules, titanus *) Niep., from New Pomerania. — eurystheus antheus Bouv. differs anicus. 
from our figure of eurystheus (pi. 52 a as liercules ) particularly in the very bright white-edged postmedian 
transverse stripe and larger vitreous spots. On the expanded end of the tail there are black spots in the <$. 
The female hindwing is not quite so long extended posteriorly as in other forms of hercules. New Guinea 
(Weyland Mts.). 
P. 502—503. The number of Attacus-iovms has in the meantime increased to more than 20. One form 
in Oberthur’s collection, which is not yet described, is even said to be palaearctic (from ,.Tibet“). It is very 
questionable whether all these new forms can be maintained as separate local races. Hundreds of a^as-pupae, 
which I had collected in China and India, yielded extraordinarily deviating forms, even those pupae that had 
been collected in the same garden. Moreover, we may state here that Hampson assumes for the whole of British 
India but 2 MWacws-species (beside the Sarnia which he includes in the Attacus ): atlas and the alpine form 
edwardsi. Nevertheless we add here the forms having been described in the meantime. 
A. atlas burinaensis Jur. Lino.1. Here the exterior transverse stripe is removed far from the margin burmaensis 
of the wing, so that it is almost situate in the centre of the wing, whereby the darker discal area exhibiting the 
hyaline spot is greatly reduced. Abdomen brownish-red with fine white transverse lines at the segmental 
margins; between the thorax and the abdomen 2 broad white belts. From Burmah, about 50 km to the north talas. 
of Rangoon. — talas Hhn. (= talus Ky.) resembles staudingeri (55 A b as dohertyi ) in the vitreous spots, but 
the ground-colour is generally not darker than in typical atlas among which this form seems to occur aber- 
ratively. — The Javanese specimens of A. atlas described on p. 502 as slightly different have already been given 
separate names, and there were even differences made between West-Javanese specimens ( roseus Fruhst.) and 
East-Javanese ( triumphator Fruhst.) — From these forms such specimens originating from the I. of Bali were 
detached as baliensis Fruhst. All these separations are without foundation, and they might just as well be done 
with Chinese or Singhalese specimens, if great numbers of them were collected. — A form described by 
Eruhstorfer from Sumatra and denominated sumatrarsus I chanced also to take in the Botanical Gardens in sumatranus 
Singapore. — mannus Fruhst. is described from the Kina-Balu, but it is said to occur also in Palawan; it is 
*) Tii3 author has denominated this form only in case of the New-Pomeranian race deviating from the typical $ of 
omphale 1 ' which has not yet been described. 
