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roof above the. articulation. The latter is very free, 
allowing the tarsus to be bend slightly upwards and 
strongly downwards in the vertical plane and besides 
considerably forwards and backwards in the horizontal 
plane, when it is bent so much downwards as not to 
touch the roof of metatarsus. The importance of the 
furrowed area and of the roof is quite inconceivable 
to me. A similar structure is found in the few other 
species of Solpuga, known to me. 
In Galeodes (orientalis Stol., araneoides Pall; 
græcus C. Koch) on the 4th pair of legs the roof of 
the metatarsus is much shorter, the transverse area of 
the tarsus rather faintly furrowed, whereas the smooth 
area between the transverse area and the articular 
membrane projects like a proximal, rather taplike vault. 
On the 2d and 3d pair of legs the transverse area is 
rudimentary and the smooth area projects still more as 
a large, blunt tap. The movement is on all pairs of 
legs very well developed in the vertical plane, but 
horizontally weaker than in Solpuga. 
The roof of the metatarsus on the 4th pair of legs 
in Datames geniculatus C. Koch? is very short on the 
dorsal side, while the apophysis on the sides are rather 
projecting; the transverse area is very narrow and 
lacking fissures, the smooth area broad and evenly arched; 
the movement as in Galeodes. The apex of metatarsus 
is filled up on the upper side and a little down the 
sides with numerous, rather fine longitudinal furrows, 
which may also be found less developed down towards 
the apophysis in other genera; I have examined them 
with the miscroscope without result. The 2d and 3d 
pairs of legs are, on the contrary, built almost as in 
Galeodes; the furrows on the transverse area are, 
however, more distinct. 
