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983 



TERTIARY FAUNA OF FLORIDA 



Tagelus gibbus Spengler. 



Solen gibbus Spgl., Skrift. Nat. Selsk., iii., p. 304, 1794. 

 Solen guinecnsis Chemn., Conch. Cab., xi., p. 202, pi. 198, fig. 1937, 1795; Dillwyn, Descr. 



Cat., i., p. 62, 1817; Wood, Gen. Conch., p. 129, 1835. 

 Solen declivis Turton, Conch. Diet., p. 164, fig. 80, 1819. 

 Psammobia declivis Turton, Dithyra Brit., p. 91, 1822. 

 Solen caribccus Lam., An. s. Vert., v., p. 454, 1818. 

 Siliquaria notata Schum., Essai, p. 129, pi. vii., figs. 2-3, 1817. 

 Solecurtus caribaus, Blainv., Diet. Sci. Nat., xxix., p. 240, 1825; Conrad, Am. Mar. 



Conch., p. 22, pi. 4, fig. 3, 1831 ; Gould, Inv. Mass., p. 30, 1841 ; Mighels, Bost. Journ. 



Nat. Hist., iv., p. 312, 1843 I Sowerby, Conch. Icon., Solecurtus, fig. 21 a-b, 1874. 

 Solen Adansonii Bosc, Hist. Nat. Coq., iii., p. 12, 1802. 

 Cultellus caribceus Conrad, Am. Journ. Sci., 2d Ser., i., p. 404, 1846; not of Medial Tert., 



pi. 43, fig. i, 1845. 



Siliquaria gibba H. and A. Adams, Gen. Rec. Moll., ii., p. 347; not pi. 93, figs. 5, 53, 1856. 

 Siliquaria caribaa Holmes, Post-Pleioc. Fos. S. Car., p. 54, pi. viii., fig. 14, 1858. 

 Siliquaria carolinensis Conrad (ex parte), Proc. Acad. Nat. Sci. Phila. for 1862, p. 571, 



1863. 



f Solecurtus angulatus Sowerby, Conch. Icon. Solecurtus, pi. viii., fig. 23, 1874. 

 Solecurtus centralis Sowerby, Conch. Icon., fig. 18, 1874 ; not of Say. 

 Tagelus gibbus Ball, Proc. Bost. Soc. Nat. Hist, xiii., p. 251, 1870. 



Fossil in the Miocene of York River, Virginia, near Yorktown (Harris), 

 in the Pliocene of the Caloosahatchie marls, Florida, and the Waccamaw dis- 

 trict, South Carolina, and in the Pleistocene from New Bedford, Massachu- 

 setts, to Florida and the Gulf Coast. Recent from Cape Cod south to Brazil 

 and on the west coast of Northern Africa. Adventitious on the British coast. 



All the specimens collected from the Caloosahatchie marls appear to be 

 young, at which stage they much resemble the adults of T. divisus, which, 

 however, has longer nymphs, a shorter pallial sinus, and a median clavicle. 



Tagelus gibbus var. carolinensis Conrad. 

 Siliquaria carolinensis Conrad, Proc. Acad. Nat. Sci. Phila. for 1862, p. 571, 1863 ; ex parte. 



Miocene of Wilmington, North Carolina; Emmons and Stanton. 



This form differs from the typical gibbus in being somewhat shorter and 

 stouter and with a shorter pallial sinus. The differences are, however, little 

 greater than appear between specimens of the recent shell from different 

 localities. 



