x6 



48 



Subgenus S CAP HA RCA Gray 

 fScapharca) secficastata Reeve 



Area secticostafa Reeve, Conch, Icon., Area, No. 38, pi. 6 r 

 1844. 



Anomaloeardia Floridiana Conrad, Araer. Jottr. Conch., voL 

 5, p. io8 y pi. 13,. fig. 2, 1869, 



Uenosa Dall, Bull. 37, U. S. Nat. Mus., p, 40, 1889. Not 

 lie?iosa Sa.y which is fossil only. 



secticostata Dall, Tran, Wagner Inst. Sci., vol. 3, pt. 4, p. 

 636, 1898 ; Vanatta, Proc. Acad. Nat. Sci. Phila., vol. 55, 

 p. 756, 1903 j Sheldon, Palaeont. Amer., vol. r. p. 36, pL 

 8, figs. 3, 4, 5, 1916. 



Uenosa var. floridana Mitchell, List Texas Shells, 

 Remarks ; This comparatively rare shell has been confused 

 with its ancestral type, Area Uenosa of the Miocene, first 

 described by Say. 

 Distribution. — Hatteras to Trinidad. Pleistocene to Recent, 

 Gulf coast. — Recent : St. Joseph's Bay and Crooked 

 Island, West Florida ; Long Key, Gulf of Mexico ; Gal- 

 veston, Texas. Pleistocene : North Creek, Little Sara- 

 sota Bay, Fla. 



(Scapharca) santarosana Dall, Trans. Wag. Inst. Sci., vol. 3, pt. 

 4, p. 641, pi. 31, figs. 2, 10, 1898. 

 santarosana Maury, Bull. Amer. Pal., vol. 3, p. '375, 1902 ; 

 Sheldon, Palseont. Amer., vol. 1, p. 38, pi. 9, figs. 1, 2, 3, 

 1916. 



Distribution. — Miocene. Chipola River marl, Calhoun Co.. 

 and the Oak Grove sands, Santa Rosa Co., Fla. Also the 

 lower bed, Alum Bluff, Fla. Bacom No. 1 well, near 

 Mobile, Alabama at 1 500-1 556 feet, Oak Grove horizon ; 

 Bacom No. 2 well at 1241 and 1600 feet. (Well speci- 

 mens in Aldrich's collection). 



