THK NAUTILUS. 47 



Zonitoides minus culus alachuanus (Dull.) Miami, Lemon City and 

 New Smyrna. This small white Zonitoides is found everywhere 

 under decaying bark in damp hammock lands. 



Family VAGINULID.E. 



Vaginulus fioridanus Binn. Miami. Not common. This seems 

 to be the first record for Vaginulus from the east coast of the main 

 land. Previous Florida records are from Charlotte Harbor and 

 Purita Rossa. 



Family AMPULLARID.E. 



Ampullaria depressa Say. Miami River and Everglades. Abun- 

 dant. 



Family AMXICOLID^E. 



Amnicola sanctijohannis Pilsbry. Miami River. Rare. 



Potamopyrgus coronatus (Pfr.). Miami River. Rare ; inhabiting 

 small streams and ditches upon the aquatic vegetation in company 

 with Amnicola sanctijohannis. 



Family AURICULID.E. 



Auricula peilucens Mke. Miami. This rare snail was found only 

 in and under soft, rotten mangrove branches which lay on the mud 

 in the mangrove swamps along the bay side. They have the power 

 to deeply imbed themselves into the soft rotten wood. 



Carychium exiguum (Say). Lemon City ; locally plentiful in dark 

 hammock under leaves and logs. 



Melampits floridamts Shuttl. Miami. This rarer small species 

 seems confined to the brackish water areas of the Miami River. 



Melampus cojfeus (Linn.). Miami. Abundant in salt water and 

 more brackish areas, seeming to prefer mangrove swamps, but also in 

 more open marshy places, where it ascends the higher sedges at cer- 

 tain seasons, apparently to deposit its eggs, as it does not seem to eat 

 the grasses on which it is found. 



Family LIMN.EID^. 



Limncea cubensis Pfr. Miami River. A rare species. 



Planorbis tumidus Pfr. Miami and Lemon City. In the edge of 

 the Everglades at the head of the Miami River and in the ditches of 

 the muck gardens in that neighborhood this animal abounded, asso- 

 ciated with intercalaris in about equal numbers. It was rare in the 

 Everglades proper. 



Planorbis intercalaris Pilsbry. Miami and Lemon City. Abund- 



