290 
which could be decided by none of them. How then can the matter > 
settled in these latter instances? We will suggest a method further 0m 
It will be observed that it is among the more common and earliest 
described species that the synonymic heap is greatest. This 1s exceed- : 
ingly embarrassing to the student, who in general has occasion his - 
ese very species, being those most easily accessible, in the course of LS 
studies, He may find in a dozen different books the characters, analene 
ical or otherwise, of what appear to him a dozen different objects, sinc? e 
the names used may be different, and elementary works cal be e 
pected to go into synonymical details. At the present day, thanks 
ternational exchange ; 
we find ourselves forced to change the i had 
® fir generic nam , 
familiar as they are by long and constant usage. : ) 
