Notes on Certain Terrestrial Mollushs. 77 



The accompanying figures of this and the preceding species 

 were kindly drawn for me, on wood, by Mr. W. G. Binney. 



Fig. 3. Zonites Stearnsii. 



Zonites indentatus, Say. 



Pfeiffer, on the authority of Hjalmarson, mentions the 

 occurrence of this species in St. Domingo. 



I have specimens collected by Dr. Cleve in Puerto Rico 

 which are scarcely distinguishable from Z. indebitatus, but 

 the color is very much darker than of American shells. 



Hyalina Bermudensis, Pfr. 



This has been shown (Bland and Binney, Annals, X, 221) 

 from the character of the lingual dentition, to belong to the 

 Vitrinea, not to the Ilelicacea of v. Marten's arrangement. 



I am indebted to Mr. J. Matthew Jones for an opportunity 

 of examining a remarkable sub-fossil form found in stalag- 

 mitic conglomerate, in caverns at Tucker's Town, Bermuda. 



The living H. Bermudensis, as described by Pfeiffer (Zool. 

 Proc, 1845), has seven whorls and in size is diam. maj. 23, 

 min. 21 mill., alt. 12 mill. 



The extinct form differs from it in having nine whorls, the 

 last more convex above, a less acute carina, umbilicus smaller, 

 but especially in size. The measurements are diam. maj. 

 37, min. 34 mill., alt. 19 mill. 



I propose the name of Hyalina Nelsoni for the sub-fossil 

 species, in honor of Lieut. Nelson, the author of valuable 

 geological memoirs on the Bermuda and Bahama Islands. 



