NEW SPECIES OF FOSSIL SCORPIONS. 409 
carapace of the Mazonia is almost identical with that of E. tuberculatus above 
described. Had their fossil been preserved so that the overhanging portion of 
the carapace above the antero-lateral margin had been pushed back, the lateral 
eyes, which in all probability exist, would no doubt have settled the question. 
Fig. 24 is a copy of their figure ; the firm lines show the boundaries of the 
portions they found preserved, while the dotted lines show what was left to 
conjecture. Only one of the antero-lateral angles is preserved (the left), and 
even there the lateral eyes could not be seen if the carapace were like that 
of any of our species of Hoscorpius. The posterior lateral angles seem to be 
broken away also. The inflated portion of the carapace, the large mesial eyes 
placed in the same position, and identical in arrangement and structure with that 
exhibited by the present L. ¢twberculatus—so much so that the same words were 
unwittingly used in this description of the latter as those employed by Messrs 
MeeEK and WorTHEN in describing their Mazonia—all tend to show that the two 
are very nearly allied. This conjecture is greatly strengthened by the study of 
the abdomen of their figure. The dorsal portions of seven segments are shown 
with just space enough between the posterior margin of the carapace and the 
first segment for another, but there is no reason to believe that there ever was 
an eighth.* The seventh is suddenly contracted posteriorly, and abruptly trun- 
cated, evidently pointing to there having been a tail attached to it. The 
detached limb which is preserved is in all probability, from its elongated 
appearance, one of the hinder walking legs, and not one of the palpi. A com- 
parison of the Mazonia carapace with their figure of the EL. carbonarius is 
also very instructive (fig. 23). If their figure of the latter be a good repre- 
sentation of the specimen, then the posterior part of the eminence on which 
the mesial eyes was set is still shown, and the rim of the left mesial eye 
is also apparent. Taking all these things into consideration there is every 
reason to look upon the Mazonia as belonging to their genus Hoscorpius, but 
a distinct species from their £. carbonarius. It would then require to be 
changed to #. Woodianus. 
* The lithographer has shaded this space as if it were a portion of another segment, a mistake 
which was not observed till the plates were struck off. 
EXPLANATION OF PLATES. 
