496 
CLASS ARACHNIDA. 
more spacious, in the form of a corslet. An abdomen very 
distinct and annulated ; palpi very large, in the form of feet 
or claws ; eight feet in both sexes, with two equal hooks at 
the end of the tarsi, the anterior two, at most, excepted ; two 
antennso-pincers or forceps apparent, terminated by two claws, 
and two jaws formed by the first articulation of the palpi. 
They are all terrestrial, and have the body oval or oblong. 
This family comprehends but two genera. 
Galeodes, Oliv. Solpuga, Licht Fab., 
Have two very large forceps, with vertical claws, strongly 
denticulated, one upper, fixed, and often provided at its base 
with a slender elongated appendage, terminating in a point, 
and the others mobile ; the palpi large, advanced in the form 
of feet, or antennae, terminated by a short articulation, in the 
form of a button, vesicular, and without a hook at the end. 
The two anterior feet are of a figure almost similar, equally 
devoid of hooks, but smaller; the others are terminated by a 
tarsus, the last articulation of which is provided at the end 
with two small cushions, and two long claws, with a hook at 
their extremity. There are five scales in the form of a half- 
funnel, and pedicled, on each of the hinder feet, disposed in a 
range along their first articulations ; and two eyes, very much 
approximated on an anterior eminence of the first thoracic seg- 
ment, which represents a large head, bearing, besides the 
parts of the mouth, the two anterior feet. 
Their body is oblong, generally soft, and provided with 
long hairs. The last articulation of the palpi, or their button, 
encloses, according to M. Dufour, an especial organ, in the 
form of a disk, of a mother-of-pearl white, and which never 
presents itself externally, but when the animal is irritated. 
The two anterior feet may be considered as second palpi. 
The labrum has the form of a very small and compressed 
beak, curved, pointed, and hairy at the end. The tongue is 
