AND HABITS OF DIAXENES DENDROBII, GAHAN. 5 
THE LARVA. 
The larva is a legless grub, convex on both dorsal and 
ventral surfaces. It is jawed, and has a chitinised head. Very 
short antennz may be seen on careful examination. Here and 
there over the body are bristles, The larva is to begin with 
whitish in colour, but later, and especially about the time of 
making its cocoon, yellowish. The stigmata along each side are 
well marked. It measures from 20 mm. to 22 mm. 
THE PUPA. 
A general knowledge of the form of the pupa will be obtained 
from the figures, where it will be noted how the femur and tibia 
of the first two pairs of legs form a sort of knee which projects 
slightly above the edge of the dorsal surface. The long antennz 
pass back, held at the edge of the dorsal surface by the two 
“knees” of the first and second pair of legs. Half-way down 
the body of the pupa the antennz curl round between the second 
and third pair of legs and, crossing the ends of the wings, run 
forward on the ventral surface to the tarsi of the front pair of 
legs. Measurements of different pupz gave from as small as 
II mm. up to 16mm. 
LIFE-HISTORY AND HABITS. 
The beetles rest during the day, sometimes at the base of the 
plant, with their heads, it may be, buried in the moss of the pot 
in which the plant is growing ; sometimes on the under surface 
of a leaf; but the favourite place was between two almost 
touching pseudo-bulbs. Now and again we got them moving on 
the plant in the daytime, but typically they are night-feeders. 
Often, after dark, on going into a glass-house with a lantern, I 
found them ‘browsing on the leaves or pseudo-bulbs with 
extended waving antenne. 
The beetles are very sluggish, remaining in the same place for 
long. Even a gentle prodding failed to make them move much, 
but never failed in drawing from the beetles a curious scraping 
sound like the creaking of a saddle or the noise made in cutting 
acork. The sound was produced by the beetles rubbing the 
