290 MOTIONS OF INSECTS. 
der the several heads of walking or running, jumping 
climbing, and swimming. . 
Amongst those that walk, some are remarkable for 
the slowness of their motion, while others are extremely 
swift. The caterpillar of the hawk-moth of the Fili- 
pendula (Rygena Filipendule, ¥.) is of the former de- 
scription, moving in the most leisurely manner; while 
that of Bombyx leporina, F., a moth unknown in Britain, 
is named after the hare, from its great speed. The 
caterpillar of another moth, the species of which seems 
not to be ascertained, is celebrated by De Geer for the 
wonderful celerity of its motions. When touched it 
darts away backwards as well as forwards, giving its. 
body an undulating motion with such force and rapidity, 
that it seems to fly from side to side*.—Cuvier observes, 
that the grubs of some coleopterous and neuropterous 
insects, which have only the six perfect legs, by means 
of them lay hold of any surrounding object, and, fixing 
themselves to it, drag the rest of their body to that 
point; and that those of many capricorn beetles and 
their affinities (but that of Callidium violaceum is an 
apode?) have these legs excessively minute and almost 
nothing; that they move in the sinuosities which they 
bore by the assistance of their mandibles, with which 
they fix themselves, and also of several dorsal and ven- 
tral tubercles, by which they are supported against the 
sides of their cavity, and push themselves along, in the 
same manner as a chimney-sweeper—by the pressure of 
his knees, elbows, shoulder-blades, and other promi- 
nent parts—pushes himself up a chimney*. The larva 
a De Geer, i. 424. 6 Kirby in Linn. Trans. vy. 258. 
© Anatom. Comp. 1. 430. 
