12 Bulletin 34 44 



umbonata Dall, Trans. Wagner, Inst., vol. 3, pt. 4, pp. 620, 

 659, 189S ; Idem, pt. 5, pi. 3S, figs. 4, 4 a, 1900 ; Sheldon, 

 Palaeont. Americana, vol. t, p. 8, pi. i, figs. 12 to 17, 

 1916 ; Maury, Bull. 29, Amer. Pal., p. 163, pi. 30, fig. if, 

 191 7; New York Acad. Sci., Porto Rico Survey, vol. 3, 

 pt. I, p. 6, 1920. 

 Distribution. — Hatteras to Brazil. Oligocene (of Porto Rico 

 and of Tampa, Florida) to Recent. Gulf Coast. — Living : 

 west Florida and Galveston. Miocene : Chipola River, 

 Calhoun Co., Florida. Oligocene : Tampa Bay silex 

 beds. 



Subgenus BAR BATS A Gray 

 barbata Linnaeus 



Arcabarbata Linnaeus, S3^st. Nat., p. 693, 1758. 



barbata, H. and A. Adams, Gen. Rec. Moll., vol. 2, p. 534, 



pi. 124, figs. 4, 4 a, 4 b, 1858 ; Dall, Bull, 37, U. S. Nat. 



Mus., p. 40, 1889 ; Trans. Wagner Inst. Sci., vol. 3, pt. 



4, pp. 614, 615, 659, 1898 ; Sheldon, Palaeontographica 



Americana, vol, i, p. 12, pi. 2, figs. 4 to 7, 1916. 

 Distribution. — Hatteras to Barbados and the Mediterranean, 



in 2 to 15 fms. Gulf Coast west Florida and Texas. 



(Dall). A common European fossil. 



(Calloarca) Candida Gmelin 



Area Candida Gmelin, Syst. Nat., vol, 6, p. 3311, 1792. 

 janiaicensis Gmelin, Syst. Nat., vol. 6, p. 3312, 1792 ; Dall, 

 {^as Noetia), Bull. 37, U. S. Nat. Mus., p, 40, 1889. Not 

 a valid species. 

 cajidida Dall, Bull. 37, U. S. Nat. Mus., p. 40, 1889 ; Trans. 

 Wagner Inst., vol. 3, pt. 4, p. 626, 1898 ; Dall and Simp- 

 son, Bull. U. S. Fish Comm., vol. 20, pt. i, p. 460, 1901 ; 

 Sheldon Palseont. Americana, vol. i, p. 16, pi. 3, figs. 11, 

 12, 1916. 

 Distribution. — Recent : Hatteras to Brazil, tide water to 5 fms 

 Perhaps also African. Gulf coast. — Recent : West Fieri- 



