90 
BRITISH BEES. 
ries of its cell. Its small head, which is smooth above, 
has a little projecting horn on each side representing 
the future antennae. The small lateral jaws articulate 
beneath a narrow labrum or lip, which folds down over 
them. To prove that the food provided requires still 
further comminution, these jaws are incessantly masti¬ 
cating it. The form of these jaws approximates to that 
of the insect which it will produce, being toothed and 
broad at the apex in the artisan and wood-boring bees, 
and simple in those which burrow in softer substances. 
On each side beneath these jaws there is an appendage, 
rather plump, having a setiform process at its extremity, 
and beneath these, in the centre, we observe a fleshy 
protuberance which, at its tip, has a smaller perforated 
process that emits the viscid liquid with which the grub 
spins its cocoon, and which immediately hardens to the 
consistency of silk. 
Having constructed its cocoon, where the species does 
so,—for it is not incidental to all the genera,—and 
shrunk to its most compact dimensions, the larva be¬ 
comes transformed into 
The Pupa .—This is semi-transparent at first, and 
a he there may be seen 
through the thin 
pellicle, which inva¬ 
riably clothes every 
portion separately, 
of the body the ri¬ 
pening bee, which 
lies, like a mummy, 
with its wings and 
Fig. 3.— a, the pupa, seen beneath; b, seen 
above; c,se^n laterally. 
legs folded lengthwise along its breast. The parts gra¬ 
dually assume consistency, and the natural colours and 
