The An 
Naturalist. 
ness. Kowalevsky has shown that with the reduction of the 
number of the digits, the metapodials of those which remain, 
have increased in transverse diameter, so as to articulate 
with two distal elements of the carpus and tarsus each, 
instead of with but one, as in the primitive types, as 
therium, Hyopotamus and Hippopotamus. (Fig. 
shows that where this expansion of the metapodials 
Anoplo- 
8.) He 
