i6 Bulletin 34 48 



Subgenus SCAPHARCA Gray 

 (Scapharca) secticostata Reeve 



Area secticostata Reeve, Conch, Icon., Area, No. 38, pi. 6, 

 1844. 



Anomalocardia Floridia?ia Conrad, Amer. Jour. Conch., vol. 

 5, p. 108, pi. 13, fig. 2, 1869, 



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

 lienosa Say which is fossil only. 



secticostata Dall, Tran. Wag'ner Inst. Sci., vol. 3, pt. 4, p. 

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

 p. 756, T903 ; Sheldon, Palseont. Amer., vol. i. p. 36, pi. 

 8, figs. 3, 4 5, 1916. 



lienosa v^r . floridana Mitchell, List Texas Shells. 

 Remarks ; This comparatively rare shell has been confused 

 with its ancestral type, Area lienosa 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 Ke3^ Gulf of Mexico ; Gal- 

 \'eston, 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. 

 santarosafia Maur}", Bull. Amer. Pal., vol. 3, p. 375, 1902 ; 

 Sheldon, Palasont. Amer., vol. i, p. 38, pi. 9, figs, i, 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. i well, near 

 ]\Iobile, Alabama at 1500-1556 feet, Oak Grove horizon ; 

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

 mens in Aldrich's collection). 



