514 
CALIGULA. By Dr. A. Seitz. 
strigaia- 
pap ucma . 
albicera. 
vena aii i. 
joiceyi. 
foucheri. 
talboti. 
intermedia ■ 
ceramensis. 
transverse line, the white border of this transverse stripe is more conspicuous, the exterior ring around the ocellus 
reddish, proximad thicker than distad. On the hindwing there is a straight violettish-brown oblique line before 
the ocellus; the exterior transverse line is thicker than in astrophela, the exterior ring of the round ocellus is 
stronger than in astrophela. Larva black, without the yellowish-green bands of the preceding species. Queens¬ 
land. 
0. strigata B.-Bak. Head and face orange; collar above broadly edged with white, below chocolate 
with a deep purple shoulder-spot; thorax and abdomen salmon-yellow. Wings tan-coloured yellow with a 
feebly undulated brownish oblique line from before the apex through the wing and a small central ocellus at 
the cell-end, with a fine yellowish pupil and surrounded by violettish-brown, then yellow and again brown. 
Before the apex a small white, black-centred costal spot; base of costa broad violet. Hindwing with a dark 
undulating postmedian line, except the said oblique line. Expanse of wings: 72 mm. Mafalu, British New 
Guinea. 
0. papuana B. &• J. (56 A a) is quite similar to astrophela, but the brown costal-marginal stripe is 
considerably broader and the brown irroration of the costal area extends to the apex of the fore wing, Astrolabe 
Bay and British New Guinea. 
0. albicera B. <b J. (56 A b) is considerably smaller than papuana, paler yellow, but the brown oblique 
streak through the wings thicker. The antemedian transverse streak is more distinct, too, whereas the brown 
irroration is only broader in the basal half of the costal area ; in the apical half only the costa itself is fine brown. 
British New Guinea. 
0. venusta B. <£• ./. (56 A d) has the size of the preceding species, but a bright fox-red ground-colour 
which is only suffused with violettish-brown in the costal area and around the cell. Ocelli red-orange, with 
white pupils and rings, the ocellus of the hindwing distally filled with black. British New Guinea. In the 
habitus somewhat like a small Cal. helena. 
0. Joiceyi Bouv., from Geelvink Bay in Dutch New Guinea, cannot be mistaken for any other species 
owing to the dense blackish-brown stripe extending in the <$ from the apex to the inner margin before the 
tornus of the forewing and being continued right through the hindwing. It is inside accompanied by a chain 
of small whitish crescents, bordered somewhat dark. Ocelli very small, the colouring otherwise yellowish- 
brown, the $ darker. The $ with an expanse of almost 18 cm is the largest of the genus and belongs to the 
largest Saturniids of the faunal region. Its exterior transverse stripe is almost quite straight and thickly edged 
with white, and the central ocelli on both wings are large though with small light centres. 
0. foucheri Bouv. (? $ = grisea Bouv.), from Yule I. belonging to New Guinea, is quite similar to 
joiceyi, excepting the ocelli being longish, extended in the longitudinal direction of the wings. 
0. talboti Bouv. resembles foucheri, but the ocelli are rather longer than broad, more like those of 
joiceyi. It resembles foucheri in its shape, total colouring and that of the veins and transverse stripes. The 
colour of the outer ring of the ocellus is almost the same in its whole extent. The falcation of the apex of the 
forewing is just as large, and the white apical spot just as much developed. From foucheri it differs in the 
entirely straight outer transverse stripe reaching close to the ocellus of the forewing, in the distal transverse 
stripe on the hindwing being quite irregular and touching the ocellus. 79 —82 mm. Dutch New Guinea. 
0, intermedia Bouv. The 2 only differs from joiceyi -$ in the quite rectilinear interior and exterior 
transverse stripes on the forewing and in the ocelli: that of the forewing being almost quite round with a large 
round vitreous spot, that of the hindwing being only little distorted. Dutch New Guinea. It may be a genuine 
Opodiphthera ? *). 
0. ceramensis Bouv. and intermedia I only know from the photographic figures supplied by the author; 
these figures do not correspond with the description at all. The specimen figured is a $ (in the text a A) of an 
expanse of 65 mm (in the text 102 mm), pale ochreous with very small round ocelli and an almost linear outer 
transverse stripe of the forewing being very remote from the margin. Behind the exterior transverse streak 
of the hindwing there are a few dark dots. From Ceram. 
12. Genus: Caligula Mr. 
The exact description of the genus is to be found in Vol. II, p. 217. Whilst some forms, such as helena, 
still exhibit the characters of the Antheraea or Opodiphthera, others, such as zuleika, anna, lindia, by the distal 
deeply notched undulate lines already show a habitual resemblance to the genera Saturnia and Eudia, which 
is still more remarkable in the palaearctic C . hoisduvali. The larvae likewise prove the genus to be composed 
of intermediate forms of other groups. Thus the larva of C. eucalypti is still quite a green larva of Antheraea 
with short tubercles bearing a wreath of bristles, whereas that of Cal. japonica exhibits a long soft hairy fur. 
the cocoons frequently show a pierced network. Some species, such as C. loranthi, spin heaps of cocoons together 
like the Opodiphthera. 
*) A $ is figured as but it seems improbable that this 2 belongs to the q described. 
