MOLLUSCA OF OHIO. 371 
For identification and registration, specimens may be sent 
to me, and IJ am also willing to give directions for collecting and 
preparing such. 
To several conchologists, I am under obligation for much 
valuable information, especially to Mr. Bryant Walker, of 
Detroit, Michigan. 
As it is customary to give the numbers of species listed, the 
same is done here. The numbers are only approximately cor- 
rect, e. g., the species of Pleurocera and Gomtobasis may be 
reduced, those of the Spheriide will be added to. 
NEARCTIC INTRODUCED TOTALS 
Nephropneusta....... 92 5 Berri 
Branchiopneusta...-. .. 47 | 47 
Prosobranchiata...... tt i | 45 
Gastropoda....... —182 | —189 
\ Gah (GsakiGl ea ae eS ae 83 | 83 
Beveridae.. jose. cess 39 | | 39 
Pelecypoda........ es 122 
Motal Strada. 305 6 | oll 
MARKS AND ABBREVIATIONS: 
A + (dagger) in front of a name, means: recent addition over 
earlier lists (except mine, of Tuscarawas Co., 1894 and 1900). 
An X after a name: should be looked for especially. 
An ! after a locality: |] have seen and verified, or identified 
specimens, 
t= teste. 
A personal name in parenthesis after a locality, is that of the 
collector, or sponsor. 
“Pal.” after a name: the species is also distributed over the 
Palearctic province. 
New Philadelphia, O., January, 1907. 
