XIX — On the Lingual Dentition of Certain Tey^restrial Pal- 

 monata Foreign to the United States. 



By THOMAS BLAND AND W. G. BIKNEY. 



Read Dec. 9, 1872. 



[Reprinted from the Annals of the Lyceum of Natural History, N. Y., Vol. x, Oct., 1872.] 



Kelix JTa^y^ftina, C. B. Adams {Sagda). 



Like Sagda connectens C. B. Adams and Sagda Haldemaniana C. B. 

 Adams (see Amer. Jour. Conch. VII, p. 175), this, also a Jamaica species, 

 has quadrate, not aculeate, marginal teeth on its lingual membrane. 

 The cusps of the marginals are short, stout and blunt, centrals and lat- 

 erals as usual. 



Jaw smooth anteriorly, with scarcely any median projection to its 

 cutting edge. 



This is an additional proof of the position of Sagda 



(219) 



