55 Mollusc A of the Gulf of Mexico 23 



squamosissima Philippi, Roemer's Texas, p. 454, 1849. 

 senii7iuda Reeve, Conch. Icon., Pinna, pi. 2, fig, 2, 1858 ; 



Dall, Bull. 37, U. S. Nat. Mus., p. 36, 1889. Not senii- 



7iuda Lamarck. 

 muricata Holmes, Post-Plio. Fos. S. C, p. 15, pi. 3, fig. 3, 



1858. Not niuricata Linnseus. 

 serrata Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 4, p. 664, 



1898 ; Vanatta, Proc. Acad. Nat. Sci. Phila., vol. 55, p. 



756, 1903. 

 Distribution. — North Carolina to Guadeloupe Isl. Pliocene to 



Recent. Gulf Coast. — Recent: St. Joseph's Bay, Fla. , 



and Texas. Pleistocene : Tampa Ba}^, Little Sarastoa 



Bay, Fla. 



Genus MELINA Retzius 

 obiiqua Lamarck 



Perna obiiqua Lamarck, Jour, de Conch., vol. 2, p. 426, 

 Arango, Fauna Mai. Cuba, p. 269, 1878 ; Dall, Bull. 37, 

 U. S. Nat. Mus., p. 36, 1889. 

 Distribution. — St. Augustine to Guadeloupe. Gulf coast. — 

 West Florida and Texas. 



Genus PTERIA Scopoli 

 colymbus Bolten 



Pindada colymbus Bolten, Mus. Boltenian. p. 167, 1798; 



Chemnitz, Conch. Cat., vol. 8, p. 141, pi. 81, fig. 723, 



1785. (Chemnitz not binomial). 

 Avicula atlantica Lam., An. s. Vert., 6, p. 148, I819, (in 



part); DeKay, Zool. New York, MoUusca, p. 175 ; 



Holmes, Post-Plio. Fos. S. C, p. 14, pi. 3, fig. i, 1858 ; 



Dall, U. S. Nat. Mus. Bull. 37, p. 36, 1889. 

 hirundo Gmelin, Syst. Nat. p. 3357, 1792 ; Say, Jour. 



Acad. Nat. Sci. Phila., vol. 2, p. 262, 1822. Not of 



Bolten. 

 colymbus Dall, Trans. Wagner Inst. Sci. 3, pt. 4, p. 670, 



1898. 

 columba Mitchell, List Texas Shells. 



