322 
GAMMABIDiE. 
which have the shorter and less distinctly pear-shaped 
hands. 
Professor Westwood thinks that this species may be 
identical with the N. stygius of Schiodte, since both 
agree in the more robust form of the animal and the 
shape of the hands : there are, however, other important 
differences ; as for instance, the form of the second and 
third segments of the tail, which, together with the 
diversity of habitat, will probably prove to be of specific 
value. 
