386 Mr. E. Ernest Green’s 
The glandular folds of the (5rd and 4th ?) dorsal plates of 
the abdomen commence to appear when the larva is about 
half grown. Fig. 10 is taken from an example with a 
body length of 4°50 mm. 
Another character is noticeable in all stages—from the 
young larva to the adult insect. Towards the undersurface 
of each antennal joint can be distinguished an oval 
glandular (?) body (Figs. 12, 13), indicated on the surface 
by a shallow depression and a minute pore. I suppose 
these to be sense organs of some kind. Can they be of 
the nature of auditory organs ? 
Upon the terminal joint of each of the palpi is a minute 
tactile organ cousisting of a small fleshy tubercle bearing 
a number of minute points at its extremity (Fig. 7). 
Throughout the larval period the feet are destitute of 
any pad between the claws, and the second tarsal joint is 
minute and fused with the first. In the adult insect the 
three tarsal joints become distinct, and there is a con- 
spicuous cup-shaped pulvillus between the claws of each 
foot (Fig. 14). 
The coriaceous tips of the folded wings of the imago 
project to a distance equal to about half the length of the 
elytra. The wing itself is ample (Fig. 6) and longer than 
the body of the insect. The membranous area is not 
entirely concealed when the wing is closed, several short 
folds appearing outside the coriaceous part. 
The number of antennal joints in the imago is variable. 
One example shows 16 joints on one side and 15 on the 
other, Another has 18 and 16 respectively. A third 
example has 16 and 17; a fourth carries 15 joints only. 
I am inclined to consider 16 as the normal number. 
I was able to observe one imago shortly after its 
emergence. All the parts of the insect were soft and 
colourless; but the wings were accurately folded in their 
proper position. 
In the penultimate stage the femora of the first pair of 
legs are broad and are armed on the inner edge with a row 
of spines (Fig. 1) which gives them a distinctly raptorial 
appearance: but I have never seen them used either to 
catch or hold their prey. On the other hand I have 
watched one of these insects feeding upon and dragging 
about a fly without using its forelimbs for any other 
purpose than locomotion. 
From the above general particulars the following 
