The Nautilus 
Vol. viii. AUGUST, 1894. 
No. 4 
ON THE ORTHALICUS OF FLORIDA. 
BY H. A. PILSBRY. 
Thanks to the Binneys, father and son, we American malacolo- 
gists rarely have anything but comparatively fair sailing when we 
have occasion to work with the land mollusks of our own Country. 
Only those who have spent days and months striving to unravel the 
tangled threads of synonymy, striving to see a little way into the 
mysteries of structure, of phylogeny 
or origin, and of geographic distribu¬ 
tion, can rightly appreciate the debt 
we owe to two men who have given 
the best energy and scholarship of 
their lives to the study of American 
land shells. 
These reflections come to me as I 
think on the question of the number of 
species of Orthalicus found in Florida— 
a matter in which it seems to me that 
Mr. Binney’s books have not been 
clear. 
The species of this genus (or per¬ 
haps better, subgenus, for structurally 
it differs from Liguus only in trifling 
Foridensis points) are not, tor the most part, at 
