302 LIEUT.-COL, J. M. FAWCETT ON THE 
extremity of the band being larger than the rest; the posterior series indistinct: four 
ocelli in each series have light blue centres. A lateral white stripe along the spiracles 
from 4th to 12th segments: tubercles on anal segment yellow, well-defined, and joined 
by a raised yellow pale streak; tubercles on back of Ist segment pale and incon- 
spicuous. The Y-shaped tentacles in this species are bright crimson and much longer 
than those of P. demodocus; the scent emitted is, however, similar. 
Pupa. Bright. green ; point of dorso-thoracic prominence, two spots below it (at 
abdominal base), and edge of lateral abdominal angles creamy reddish. In shape 
somewhat attennated anteriorly, cephalic processes short and directed laterally 
outward, so that the frontal line of head is widened and but slightly concave. 
Thoracic lateral angles moderately acute ; dorsal prominence also elevated acutely but 
not inclined forward. Sides of abdomen widely flattened, and so extended as to form 
a very marked angle on each side of third abdominal segment; whence abdomen 
narrows very rapidly and greatly to the extremity. Infra-pectoral region, where wing- 
covers meet, very strongly convex. 
A marked constriction dorsally at junction of thorax and abdomen. 
In its natural position, attached vertically or nearly so, head uppermost, the anterior 
portion of this pupa is seen to be very much more bent backward than it is in 
P. demodocus. I have taken this description of the pupa, with some alterations, from 
‘South African Butterflies,’ as I thought it so well describes the peculiarities in shape 
of the pupa. 
The imago is not so often met with as P. demodocus, and seems to prefer wooded 
country more. In its haunts, however, and in the coast district it is one of the 
commonest species. 
III.—OsseERvATIONS ON THE HETEROCERA. 
Family SATURNIIDZ. 
1. Actias Mimosu. (Plate XLVII. figs. 1, 2, larva; fig. 3, cocoon.) 
Larva. Ground-colour grass-green, with paired dorsal series of long conical humps 
with yellow apices, surmounted by three or four short black hairs, and the same 
number of longer yellow hairs, from 2nd to 10th somites inclusive ; the 11th somite 
has only one similar dorsal hump, and the 1st somite no hump, with the black and 
yellow hairs planted just above the head ; a subspiracular line of small tubercles with 
similar hairs. Between each somite, from 3rd to 11th, a yellow transverse streak 
