MOTIONS OF INSECTS. 329 
vo 
upon the extremity of the four last, not excepting the 
claw-joint, there is a minute orbicular concave one, re- 
sembling a sucker. In others (B. gigantea, &c.) they 
extend the length of the four first jomts, and are very 
conspicuous. In some (B. Movuffeti, K.*,) which have 
no claw-sucker, there appears to be a cavity in the ex- 
tremity of the claw-joint, which may serve the purpose 
of one. These cushions are usually of a pale colour; 
but in one specimen of a hairy female which [ have, 
from Brazil, they are black... The spectre genus 
(Phasma) exhibits no particular varieties in this respect. 
The tarsal joints of the legs have cushions at their apex, 
which appear to be bifid. They have a large orbicular 
sucker between the claws. In Mantis the fore feet have 
neither of the parts in question, and the others have no 
suckers. They have cushions on the four first tarsal 
joints of the two last pair of legs, which, though smaller, 
are shaped much like those in Phasma. In Locusta the 
feet have no suckers between the claws, but they are 
distinguished by two oval, soft, concave, and moveable 
processes attached to the base of the first joint of the 
tarsus, which probably act as suckers, In this genus 
there are two cushions on the first joint of the tarsi, and 
one on each of the two following ones°.—The species of 
4 This insect, which is remarkable for having the margin of its 
thorax reflexed, was long since well figured in Mouffet’s work 
(130. fig. infima.). It has not, however, been described by any other 
author I have met with. It is common in Brazil. Some specimens 
are pallid, while others are of a dark brown. 
» De Geer, iii. 421. ¢. xxi. f. 13. 2. This author has also noticed 
the cushions in this genus and Gryl/us, and the claw-sucker in the 
latter, which he thinks are analogous to those of the fly. Ibid. 462. 
f, Xx yjeg-8- 
¢ Philos, Trans. 1816. t. xxi. f. 8-13. 
