227 
plate, giving great support to the articulated portion of the legs*. 
The thoracic segments are of a rich fulvous colour, each with four 
longitudinal black streaks, the two hinder ones, as well as the abdo- 
minal segments, also with small distinct raised lateral fulvous pieces 
upon the dark ground ; the first, fourth, and seven following segments 
respectively bear a pair of spiraclest. 
The larvee of the males are not so strongly characterized as those 
of the females, being nearly cylindrical, and the legs are less robust 
and raptorial, although the hind coxz are developed into a conical 
plate behind the hind pair of legs. The cases of the full-grown male 
larvee are not more than two-thirds of the length of those of the 
females. To one of the male cases I find the following note attached 
by Mr. Stephenson :—“< Examined 12 June. White Caterpillar, 
head and first segment striped with brown. Head downwards, or the 
reverse way in which it feeds. Loose silk inside the case; ready to 
change. Examined June 27th, changed to pupa. October Ist, 
imago appeared.” 
This case, with the empty pupa skin, remaining, as is the usual 
custom with these insects, sticking out of the free extremity of the 
case, is represented in Pl. XX XV. fig.6. It will be observed below 
that Mr. Stephenson noticed that this species was occasionally infested 
with Ichneumonideous parasites, as was also the case with Mr. L. 
Guilding’s West Indian species; but in a specimen of the case of 
this species brought home by Mr. Edwards, which I examined and 
sketched twenty-five years since, I found the body of the larva 
shrivelled up within the case, in which were about thirty small, elon- 
gate, ovate, smooth, red-brown puparia of some parasitic species of 
Tachinideous Muscide, dispersed amongst the silken lining of the 
case, from all of which the flies had made their escape. 
Like the pupz of the Hepialidee, the male pupz have the power 
of stretching out the abdominal segments to a considerable extent, in 
which position they remain after the imago has made its escape ; 
they are endowed with this power to enable them to work their way 
out of the extremity of their cases, in doing which they are moreover 
assisted by the transverse series of minute hooks on the dorsal surface 
of the abdominal portion of the body. These hooklets are of two 
kinds, each of the 2nd, 3rd, 4th and 5th segments having a row 
of fine recurved hooks or strong curved short bristles across their 
hinder extremity, whilst the 4th, 5th, 6th, 7th and 8th have a row 
of stronger spines directed backwards across the base. The pup 
are prevented from being forced entirely out of the cases by two 
strong hooks at the extremity of the body on the underside of the 
8th segment, which appears to be composed of the rudiments of two 
* This peculiar strength of the legs, with their gradual increase in size, is well 
represented in the Rev. L. Guilding’s figure of the larva of Oiketicus Kirbii (Linn. 
Trans. xv. tab. 7, fig. 7), but he has not noticed the remarkable construction of 
the coxz above described. 
+ Isee nothing in this larva resembling the four spiracles represented by the 
Rey. Guilding, above the ventral pro-legs of the larva of O. Kirbii (tab. cit. 
fig. 7). 
