202 Rev. G. A. Crawshay on the 
temperature failed out of doors, to the middle of November when 
the last one died. Up to the point of bringing them indoors they 
were very healthy. 
No. 5, the only one that moulted eight times, had attained an 
unusual size, and had established itself in the outer bark for pupation 
before it died, from which it would seem that eight moults is the 
limit in this species. At the same time I cannot be sure that in 
some instances they exceed seven. I brought four only through the 
7th moult. The long intervals between the 6th, 7th and 8th moults 
were due to a lowered temperature and asphyxiating atmosphere. 
Light has no injurious effect on larva or pupa, which 
thrive equally whether exposed to the full light of day or 
buried in the darkness in the tree. I have reared numbers 
exposed to light under glass. 
THe Pura (Plate XX, fig. 2)—The whole dorsal surface, the 
ventral surface of abdomen and apex of femora sparingly furnished 
with short spines which, on the dorsal surface of the abdominal 
segments, are arranged chiefly in small groups, one on either side 
of the median line. Apical segment of abdomen terminating in two 
strong spines curved inwards (Plate XX, figs. 5, 6). These provide 
the pupa with a firm hold on the wood and admit of an active rotatory 
movement as it lies vertically in its cell. 
The sexes may be distinguished by the length of the antenne, 
which, in the ¢, extend beyond the intermediate tibize further than 
in the ? by about a joint and a half: also by the formation of the 
under-side of the last segment of the abdomen which, in the ?, bears, 
close to one another, a pair of compound fleshy tubercles of con- 
siderable size (Plate XX, fig. 6). These, as I have ascertained, are 
rudiments of the appendices in the imago (Plate XX, fig. 7), which 
extend laterally from two small apical prolongations of the ovipositor. 
They are, I believe, sensory organs, for with them I have observed 
the imago, under the lens, feeling the bark when searching for a 
suitable spot in which to deposit her eggs. They are furnished with 
long set, and are soft and apparently sensitive. 
In the pupa these and other parts of the genitalia attain 
their perfect development outside what will become, in the 
imago, the apical margin of the last segment of the 
abdomen, the partially-developed tergite and sternite of 
this segment in the pupa gaping wide (Plate XX, 
A.A.A.A.), and the organs in question protruding in a 
compact body (Plate XX, B.B.B.B.). As these organs 
