4 THE NAUTILUS. 



men of P. syngenes, which I at first described as a variety of 

 muscomm. He says : 



" I am satisfied that it is a species, and not a var. of muscorum : 

 the shape of the whole shell, the last whorl so considerably flattened, 

 and ascending, the number af whorls, seem to me to prove its spe- 

 cifical rank. -^ * -•- After washing out the aperture of your specimen 

 I saw a rather strong lamella or tooth on the columella, and a 

 barely perceptible trace of an inter-palatal lamella, which however 

 is validified by the impression on the outside."] 



ANNOTATED LIST OF THE SHELLS OF ST. AUGUSTINE, FLA. 



BY C. W. JOHN.SOX. 



Teredo nivalis L. 



Pholas campechiensis Gmel. Single valves are common on the 

 ocean beach but living examples are rarely found. 



Pholas costata L. Common. 



Pholas truncata Say. A few specimens in the hard nuid on 

 Anastasia Island. 



Martesia cioieiformis Say. Conuuon burrowing into coquiua wood, 

 etc. 



Solen americana Gould. Not common and smaller than those 

 from more northern localities. 



Solen viridis Say. A few specimens. 



Ghjcimeris reflexa Say. One specimen with both valves intact was 

 found on a bar in the harbor. 



Ghjcimeris americana Conr. (G. bitruncata Conr.) Single valves 

 are occasionally found on the ocean beach — apparently recent. 



Mya arenaria L. A few single valves. 



Corbula contracta Say. Common. 



Mactra solidissima Dillw. var. similis Say. Common. 



Madra lateralis Say. Common. 



Mactra braziliana Lam. (^I. oblonga Say.) Not common. 



Labiosa lineata Say. A few single valves on the ocean beach. 



Labiosa canaliculata Say. Connnou. 



Semele orbiculata Say. Common. 



Abra aequalis Say. Common. 



Cvmingia tellinoides Conr. Xot coninidu. 



