104 Dentition of Pulmonate Mollusks. 



Veronicella Sloanei. Jamaica. 

 Jaw with 20 broad ribs. 



Veronicella . Rio Janeiro, Brazil. J. G. Anthony. 



The species undetermined, Body very long and slender. 



Jaw with about 30 ribs. 



Lingual membrane figured on PI. Ill, fig. B. 



Veronicella . Rio Janeiro. J. G. Anthony. 



The species undetermined. 

 Jaw with 20 broad ribs. 



Veronicella . Costa Rica. Dr. W. M. Gabb. 



An undetermined species. Body long and narrow. 

 Jaw with from 30 to 40 ribs. 



Veronicella . Mozambique. Mr. J. S. Gibbons. 



An undetermined species. 

 Jaw with over 22 ribs. 



Veronicella olivacea, Stearns. Folvon, Occidental Depart- 

 ment, Nicaragua. Mr. McNeil. 

 Jaw with over 20 ribs. 

 Lingual membrane, see Terr. Moll. , V. 



Stmpalopsis. 



Slinttleworth describes the jaw as having numerous, stout, 

 anterior ribs. 



Simpulopsis corrugatus, Gnppy., Trinidad. Mr. Gnppy. 



Jaw not observed. 



Lingual membrane (PL VII, fig. J) with teeth of same type as figured by 

 Heynemann for S. sidculosus. Centrals smaller than the laterals; base of 

 attachment almost as broad as long, its lower margin excavated as in Suc- 

 cinea ; reflection large, with three cusps and cutting points. Laterals like 

 the centrals, but larger and asymmetrical, the inner, larger cusp of the re- 

 flection bearing a very large, expanded, blunt cutting point. 



Crypt ostrakon. 



Cryptostrakon Gabbi, W. G. Binn. Costa Rica. Dr. W. M. 

 Gabb. 



Jaw (PL XYI, fig. L) high, solid, decidedly arched, ends scarcely attenu- 

 ated ; anterior surface with a few stout ribs, denticulating the lower 

 margin. 



