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 1st 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 attenuated 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.— Observations on the Heterocera. 



Family SATURN IIDM. 



1. Actias mimosa. (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 



