E: 
392 
| 3 small variety of communis ; ; 
_ dissimilar in its form from that shell, cé 
. after a careful examination, and 
d 3 
MNA = 
specimens of both species, be b ri 
TiSL 
unite them 
H 
to 
but so very 
= 
ET 
T E» 
: pem 
t 
Pear 
M 
ACRES 
ES 
MES A 
= 
A 
eee 
s 
ius 
