whose larve are external feeders. 343 
angular pattern, and appear to have some internal ribbing 
or skeleton, which remains stiff in a mounted specimen, 
whilst the surface loses its plumpness and shrivels. The 
abdominal legs are eight pairs on the first eight abdominal 
segments, arranged so as to suggest that this double row 
is a modification of the double rows of appendages on the 
upper surface. 
These legs are, however, of a very different structure 
from the balls of the upper surface, and also from the true 
lees on the thoracic segments. 
They consist of a long stem or shaft with, both towards 
its base and apex, some doubtful spicular projections ; 
this shaft 1s apparently cylindrical, and contains a body 
which is either a vessel or tube, or a tendon to the ter- 
minal claw. ‘The shaft arises from a conical base, to 
which it is not distinctly jointed, but is rather continuous 
with it. 
The terminal piece is a very distinct and separate 
structure, in general outline much like the terminal joint 
or claw of a thoracic leg, but with the sharp apex rounded 
off; the convexity is directed forwards (not inwards). It 
is of homogeneous semi-transparent texture, but marked 
by oblique lines, which suggest, whether correctly or not 
I cannot say, that the surface between them is raised in 
rounded ridges, which pass round the anterior and 
posterior edges and make it look like a conventional 
cornucopia. In preserved specimens the shafts of these 
legs seem laterally compressed. 
Another structure is ‘a sucker on the under surface of 
the 9th and 10th abdominal segments, its form is trefoil 
with one leaf forwards, or possibly only on 10th, the 9th 
being very narrow in front of it. 
This sucker, on a lepidopterous larva, is of course very 
unusual, and is a further point of relationship to Limaco- 
dids. The 14th segment carries dorsally two hairs. 
The true legs, besides the base, which is a little full and 
raised, consist of three joints, and much resemble the 
thoracic legs of an ordinary lepidopterous larva. The 
first large joint has two spurs on its inner margin, about 
the middle, and two or three hairs on the same zone, 
laterally and dorsally ; the second more slender joint is 
rather longer, and narrows about the middle, where there 
is a spur or bristle on its inner margin; on the outer 
side, at its extremity, is an indication of a bristle or two, 
