318 Dr. T. A. Chapman on the Léfe- Histor 
suming that the wasp-larva lives six days in its last skin. be- 
fore spinning up, I should guess that the youngest of these 
had still two or three days’ feeding to do. The Rhipiphorus- 
larve were but a little way beneath the skin of the back, 
about the fourth and fifth segments, and indifferently on 
either side. The smallest of these was 4, inch in length, 
and, except its smaller size, was precisely like the larger ones 
I am about to refer to, having the same head, legs, plates, &c. 
These were of the same size as those of the larger larve, the 
difference in size of the latter being due to the expansion of 
the intermediate colourless integument. I ought perhaps to 
add that the nest in which I found these was not examine 
until twelve hours after I had taken it. It had also been so 
much blockaded by boys stoning it, that the wasps had not 
had free access to and from it for some time. 
the third and fourth segments (head being first) of the wasp- 
larva, the little grub of Lhipiphorus shines through the skin, 
tion of the already-mentioned black marks. These are, in € 
Meloz-like larva. In length it is 4 inch (4^5 millim.), and 
vz in breadth. Except that its spiracles are not open, its re- 
spiratory and digestive systems look just like those of the 
externally feeding larva. The head (first segment) is black 
nd triangular, with a pair of antenne situated near its poste- 
rior lateral angles: these are three-jointed ; the first joint is 
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