45 MOLLUSCA OF THE Gui^F OF MEXICO I3 



da. iMiocene : Chipola River marl and Chipola horizon. 

 Alum Bluff, Fla. 



(Acar) reticulata Gmelin 



Area reticulata Gmelin, S3'Sl. Nat., vol. 6, p. 3311, 1792. 

 squaniosa^ doniingensis and clathrata Lamarck, An. s. Vfert., 



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

 gradata Broderip and Sowerby, Zool. Jour , vol. 4, p. 365, 



1829. 

 divaricata Sowerb}-, Proc. Zool. Soc, p. 18, 1833 ; Reeve, 



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

 {Byssoarea) retieidata Dall, Bull. 37, U. S. Nat. Mus., p. 42, 



1889. 

 \Aear) rctietdata Dall, Trans. Wagner Inst., vol. 3, pt. 4, p. 



629, 1S9S : Sheldon, Palseont. Americana, vol. i, p. 20, pi. 



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



Coast, p. 14, 1916 ; Maury, Bull. 29, Amer. Pal., p. 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, Calhoim Co., Fla. 



Upper Oligocene : Tampa silex beds. 



( Fossularca) adamsi Shuttleworth 



Area efdata (ZowvaA, Fos. Med. Tert., p. 61, pi. 32, fig. 2, 



1845. Not of Reeve, 1844. 

 (Aear) Adavisii Shuttleworth, in Smith Zool. Jour. Linn. 



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

 {Byssoarea) Ada?7isi Dall, Bull. 37, U. S. Nat. Mus., p. 42, 



1889. 

 ( Fossti/arca) Adamsi DaW, Trans, Wagner Inst., vol. 3, pt. 



4, p. 629, 189S ; Vaughan, Carnegie Inst. Publ. 133, p. 



171, 1910 ; Deu.s.sen U. S. G. S. Water-Supply Paper, 335, 



