THE NAUTILUS. 



VOL. XI. JULY, 1897. No. 3. 



SYNOPSIS OF THE PINNID.E OF THE UNITED STATES AND WEST 



INDIES. 



BY WM. H. DALL. 



In revising the Tertiary Pinnidce it became necessary to examine 

 the recent species and their synonymy. As certain changes in the 

 accepted nomenclature appear necessary, the following synopsis 

 may be useful. 



Family PINNIDCE. 



Genus PINNA Linne, 1758. 



Valves medially sulcate. 



Pinna rudis (Linne) Chemn., (-f pernula Reeve non Chemn.) ; 

 Bermuda, Bahamas. 



Pinna carnea Gmelin, (-{-pernula Chemn. non Reeve; -\- degen- 

 era Link, 1807; -f flabelhnn (Lam.) Reeve, 1858; -\-varicosa 

 (Lam.) Orb., 1853 ; -f ? bullata (Swains.) Reeve, 1858). 



Florida Keys, north to near Hatteras and south to Trinidad ; also 

 in the Red Sea. 



Genus ATRINA Gray, 1847. 



Valves entire. 



Atrina riyida Dillwyn apud Solander, 1817, (-f- pectinata Born 

 non Linne ; + seminuda Lam., 1819, non Reeve ; -f- alia Sby., 

 1835; -\-subviridis Reeve, 1858; -\-dorbicjnyi Hanley, 1858; -f- 

 carolinensis Hanley, 1858; -\-ramulosa Reeve, 1858; -\-seminuda 

 Holmes, 1859 ; -(- muricata of American authors, but not of Linue 

 or Reeve). 



