75 



N'otes on Certain Terrestrial MoUushs, 



Habitat. In damp moist places, among leaves. Astoria., 

 Oregon. 



Remarks, Two figm-es of the species are annexed. The 

 aspect of the upper surface of the shell is very like that of 

 Z. multidentatus, Binney. 



Fig. 1. Zonites Lansingi. 



I am indebted to Mr. Henry Hemphill for this interesting 

 little species, and dedicate it to my young friend, Mr. A. 

 Ten Eyck Lansing of Burlington, New Jersey, a very prom- 

 ising student, to whom Mr. W. G. Binney and myself are 

 much indebted for assistance in our examination of the den- 

 tition of terrestrial mollusks. 



One specimen of Z. Lansingi^ appearing to have the ani- 

 mal within it, was crushed between two glass slides, enabling 

 Mr. Binney, without the use of potash, satisfactorily to ob- 

 serve the jaw and teeth remaining uninjured in the tissues of 

 the animal. I am indebted to him for the subjoined particulars. 



Fig. 2. 



Jaw (fig. 2, A) low., wide, slightly arcuate ; ends scarcely attenuated, 

 blunt; cutting margin without median projection; anterior surface with 

 fourteen, broad, unequal, crowded, flat ribs, slightly denticulating either 

 margin. 



