10 THE NAUTILUS: 
ISAAC LEA DEPARTMENT. 
{Conducted in the interest of the Isaac Lea Conchological Chapter of the Agassiz Associa- 
tion by its General Secretary, Mrs. M. Burton Williamson. ] 
During the first quarter of the year the following new members 
have been added to the chapter: Mrs. H. A. Zeck, Los Angeles, 
Cal.; Mrs. E. H. King, Napa, Cal.; Mrs. E. A. Lawrence, 2024 E. 
Second St., Los Angeles, Cal. ; , in the Juvenile Section, } 
Ss 1 St., Los Angeles, Cal. ; and, in the J le Section, Master 
James H. Porter, New Wilmington, Pa. The California members 
will belong to Sections A. and F., the first section “ Marine Shells 
of the West Coast,” is under Professor Keep’s instruction, and, 
Section F, “ Fossil Shells,” is directed by the Hon. Delos Arnold. 
NOTES ON SOME ONTARIO SHELLS. 
[Report of Mr. James H. Lemon. From the Transactions of the Isaac Lea Con- 
chological Chapter for 1895.] 
During last Summer I was able to do very little work in the con- 
chological line, as my time was mostly occupied with botany. This 
report, therefore, will have to deal with work done in former years. 
As far as I am aware about 147 species of land and fresh water 
shells have been found in the Province of Ontario, fifty-five species 
being land shells, and ninety-two fresh water; but as very few 
localities in the Province have been diligently searched it is very © 
probable that in the future several more species will be added to 
the list. Of the 147 species, quite a number are extremely common 
all over the Province. Others, although widely distributed, are 
comparatively rare. Others, again are rather plentiful in some 
parts, but entirely wanting in other parts. Of our rarer species 
mention might be made of the following: 
Selenites concava Say. This shell has been found in several parts 
of the Province of Ontario, but nowhere abundantly. I, myself, 
have found it in Eastern Ontario, and it is reported from around 
Ottawa. 
Omphalina fuliginosa Griff., has been found, as far as I am aware, 
only near the city of Hamilton, in 8. Ontario, and even there is not 
a common shell. 
Omphalina inornata Say, has been found around Ottawa, but I 
have not heard of its being taken elsewhere in the Province. 
Gastrodonta intertexta Binn. This shell has not been found, to my 
knowledge in Eastern Ontario, but several specimens have been 
