THE NAUTILUS. 87 



the snail here also occurs on floating vegetation the similarity 

 would be very striking. 



This colon}* near Tucker's, Long Beach Island, Ocean County 

 New Jersey extends the range of Pcdudestrina salsa southward, 

 to the best of my knowledge, from Branford, Connecticut, which 

 is near New Haven an extension of considerably over a 

 hundred miles. 



My material, critically examined by Mr. E. G. Vanatta, is 

 deposited at the Academy of Natural Science of Philadelphia. 



PLEISTOCENE MOLLUSKS FROM ILLINOIS. 



BY FRANK C. BAKER. 



Early in the year the Page Engineering Company of Chicago 

 submitted to the writer some specimens of mollusks and moss 

 obtained from a cutting near the Fox River, one mile east of 

 Gary Station. The sequence of deposits is as follows : 



1. Black earth ... 2 feet 6 inches 



2. Brown earth . . . 2 " 6 inches 



3. Marl 4 " 



4. Moss ..... 2 " 



5. Marl. 2 " 



Height of section . . 13 " 



Eight species of mollusks were picked from the marl, No. 3. 



Valvala tricarinata Say. 



Valvata lewisi.i Currier. 



Amnicola lustrica Pilsbry. 



Amnicola limosa Say. 



Planorbis parvus Say. 



Planorbis exacutus Say. 



Galba gatbana Say. 



Physa species (fragments). 



The moss was submitted to Doctor Edward W. Berry, Johns 

 Hopkins University, who determined it to be " Plagiothecium 

 denticulatum (Linn) B. and S., probably near the subspecies 

 rosaceum (Hampe) B. and S." Occurring as this thick moss 



