396 NEW YORK STATE MUSEUM 
entirely unable to find. We have also failed to find in this place more 
than a faint, uncolored impression that is probably accidental. Palaeophonus 
bears a spine in a corresponding position on the second tarsus, and this 
fact may have induced Scudder’s inference. 
Although the presence of the two ‘claws ”’ on which the separation 
of Proscorpius from Palaeophonus was mainly based [see Whitfield, 
p. 183] may be wholly illusory, Proscorpius is nevertheless a good genus. 
This is evinced by the marginal position of the eye lobe and the greater 
width and different lateral margin. of the tergites. The general form of 
the carapace and the character of the legs, ds far as perceivable, indicate 
that its closest relationship is with the other Siluric scorpions. 
There are still two joints of another leg distinguishable on the left 
side. The three legs drawn by Fritsch on the right side of the carapace 
are due to deceptive shadows on the photograph, produced by irregular 
organic patches that lie in a higher layer of rock and apparently have 
nothing to do with the scorpion. It is desirable that this covering matrix 
be removed and a possibly complete right margin of the carapace exposed. 
Fritsch was the first to observe the portion of the comb discernible 
on the left side. The specimen itself shows the fragments still more dis- 
tinctly than the photograph, because the surface bearing them slants away _ 
from the light. Fritsch recognized fulcra and comb teeth and states 
that these remains indicate that this organ was of similar structure as in 
the younger scorpions. 
The inspection of the specimen in good light has brought out the inter- 
esting fact that the test distinctly retains the bristles with which it was 
covered. They are most distinctly seen, and also thickest, on the cara- 
pace, but also visible on the tergites. The photograph fails to show 
them. 
We may be allowed to touch upon the fascinating question of the 
original habitat of this waterlime scorpion, even though it can not, in the 
absence of the ventral side, furnish. any direct evidence as to its mode of 
breathing. 
