the Wasp and Rhipiphorus paradoxus. 211 
other she of the same phenomenon. They have had more 
to feed upon; and as apparently they assimilate or remodel 
almost the whole of the stuff in the wasp-grub, their bulk 
bears a relative proportion to the amount of food consumed. 
Description of Larva of Rhipiphorus paradoxus. 
In its earlier stages it is almost crystalline and transparent ; 
as it grows older it becomes like highly polished cream-co- 
loured marble (especially on the abdomen), except a longitu- 
dinal stripe up the back, which remains transparent and allows 
the eye to penetrate into the interior of the body between the two 
more solid sides—giving it, when alive, as it were the appear- 
ance of a dark stripe. When preserved in "p this line of 
thinner skin sinks and shrinks, so as to make a furrow; but 
when alive the furrow is only apparent, not real. Looking 
er. 
The whole body is doli and concolorous, and when mature 
is about 5 lines in length. It consists of thirteen E: 
but the two anal segments are scarcely distinguishable from 
each other, and in some cases the three last may be confounded 
as one. 
The head is very small, projecting like a knob from the first 
thoracic segment. It isso small that it might be mistaken 
for a large labrum. 
There are no ocelli or eyes, but a faint almost imperceptible 
narrow subcutaneous sifas of brown indicates (as in the wasp- 
grub, but not nearly so distinctly as in it) the inner margin of 
the future eye. There is a faint longitudinal whitish line 
running up the middle between them. | 
e labrum is rounded and tumid at the apex; when seen 
from below, it is obtuse (see figs. 10 & 11). i 
.The mandibles are round and stout at the base, rapidly ter- 
minating in a very obtuse awl-shape with a very sharp and mi- 
nute point, which is not central, but more to the front tham 
e middle. 
th 
14* 
