45 MoLLuscA OF THi<: Gulf of Mexico 13 



da. Miocene : Chipola River marl aud Chipola horizon, 

 Alum Bluff, Fla. 



(Acar) reticulata Gmelin 



A7'ca reticulata Gmelin, Sysi. Nat., vol. 6, p. 3311, 1792. 

 squamosa, dommgensis and dathiata Lamarck, An. s. Vert., 



vol. 6, pp. 45, 40, 46, 1S19. 

 gradata Broderip and vSowerby, Zool. Jour , vol. 4. ]). 365, 



1829. 

 divaricata Sowerby, Proc. Zool. Soc, p. 18, 1833 ; Reeve, 



Conch. Icon., Area, pi. 16, fig. 108, 1844. 

 {Byssoarea) retieulata Dall, Bull. 37, U. S. Nat. Mus., ]). 42, 



1889. 

 {Acar) reticulata Dall, Trans. Wagner Inst., vol. 3, pt. 4, p. 



629, 1898 : Sheldon, Palseont. Americana, vol. i, p. 20, ])1. 



4, figs. 8 to 12, 1916 ; Dall, Checklist. Moll. Northwest 



Coast, p. 14, 1916 ; Maurj^, Bull. 29, Amer. Pal., ]). 166, 



pi. 30; fig. 16, 1917 ; N. Y. Acad. Sci., Porto Rico Surv., 



vol. 3, pt. I, p. 7, 1920. 

 Distribution. — Hatteras to Panama, also in the Mediterranean: 



Pacific, California to Ecuador, tidewater to 287 fms. 



Jacksonian Eocene to Recent. Gulf coast.— Recent : 



west Florida and Texas ; Pliocene : Caloosahatchie River, 



Florida. Miocene : Chipola River, Calhoun Co., Fla. 



Upper Oligocene : Tampa .silex beds. 



( Fossularca) adamsi Shuttleworth 



Area e(vlata Qowx'A.di, Fos. Med. Tert., p. 61, i)l. 32, fig. 2, 



1S45. Not of Reeve, 1S44. 

 (Acar) Adafusii Shuttleworth, in Smith Zool. Jour. Linn. 



Soc, vol. 20, p. 499, pi. 30, figs. 6, 6a, 1888. 

 (Byssoarea) Adamsi Dall, Bull. 37, U. S. Nat. Mus., p. 42, 



1889. 

 (Foss2ilarca) Ada))isi Dall, Trans, Wagner Inst., vol. 3, ])t. 



4, p. 629, 1898 ; \'aughan, Carnegie Inst. Publ. 133, p. 



171, 19 10 ; Deussen LI. S. G. S. Water-Su])ply Paper, 335, 



