THE NAUTILUS. O 



Tagehis gibhus Spengl. Common. 



Tagelus devisus Spengl. Common. 



Tellina alternata Say. Common. 



Telllna polita Say. Common. 



Tellina tenera Say. Common on the bar below the United States 

 Barracks. 



Tellina braziliensis Lam. A few single valves. 



Macoma tenia Say. Not common. 



Macoma constricta Brug. A few single valves. 



Donax variabilis Say. Common. 



Donax obesa d'Orb. Common at the mouth of the Lagoon. 



Petricola pholadtlformis Lam. Common. 



Petricola typicus Jonas. One specimen from a coquina rock at 

 Matanzas Inlet. 



Ve)ius mercenaria L. Common. 



Venus cancellata L. A few single valves. 



Callista gigantea Gmel. Not common. 



Dosinia discus Reeve. Common. 



Cyrena carolinensis Bosc. Common in small brackish-water 

 streams. 



Sphcerium partximinm Say. Common in Moultrie Creek. 



Sphierium contractum Prime. A few near St. Mark's pond. 



Cardiwn magnum Born. Common. 



Cardium muricatum L. Not common. 



Ijcevicardium serratum L. Rare. 



Chama arcinella L. A few single valves. 



Chama macrophylla. Not common. 



Lxicina dentata Wood. Common. 



Lucina crenulata Conr. Not common. 



Loripes edenhda L. Large single valves are quite common but 

 living examples are rare. 



Soleviya velum Say. Two specimens. 



Parastarte triqiietra Say. Not common. 



Cardita tridentata Say. Not common. 



Unio blandingianus Lea. Common in Cowan's Swamp. This is 

 one of the Florida species that is able to survive a long time out of 

 water. 



Uniofuscatus Lea. Common in the upper part of Moultrie Creek. 



Unio nigrinus Lea. Common in tributaries of the St. John's 

 River west of St. Augustine. 



