322 PROCEEDINGS OL UNITED STATES NATIONAL MUSEUM. 
Macroceramus pontificus (Gould) Bland. 
Key West. 
Cylindrella poeyana D’Or)b. 
Key West, not rare. 
Zonites suppressus Say. 
Fernandina, not rare. 
Zonites (Hyalina) arborea Say. 
Cedar Keys. From the way in which European specialists are split- 
ting up the older species of Hyalina, there seem to be fair reasons for 
retaining for the American forms their American names. 
The same may be said for our common Conulus, for which, or for stages 
of which, some European authors have lately proposed new names, 
Zonites (Hyalina) minuscula Binney. 
Tampa, not rare. 
Zonites (Conulus) egena Say. 
Cedar Keys and Fernandina, not very rare. It differs slightly in 
form and color from the European Conulus fulvus Drap, though doubt- 
less not more than European specimens of that species among them- 
selves. 
* * * 
Succinea campestris Say. 
Key West and abundantly at Fernandina, the latter of larger size. 
These are the genuine campestris of Say. 
Succinea? aurea Lea. 
Fernandina, not rare. Identified by Mr. Binney. 
Succinea? obliqua Say. 
Walls of Fort Marion, San Marco, Saint Augustine, abundant. Mr. 
Binney is disposed to refer these to campestris junior, but they appear to 
me more elongated. 
Planorbis dilatatus Gould. 
In a pond at Saint Augustine. This is about the most southern 
locality yet reported. 
Melampus bidentatus Say. 
Tampa, in marshes near high-water mark, abundant; Cedar Keys, in 
similar situations; Saint Augustine, plenty. 
Melampus flavus Gmelin.* 
Fernandina, abundant. Many specimens of M. bidentatus seem dis- 
tinguished from this form chiefly by size. This group appears much in 
need of a general revision. 
Melampus caffeus Lam.” 
Key West, not very plenty ; associated with the next species. 
