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993 



TERTIARY FAUNA OF FLORIDA 



Semele purpurascens Gmelin. 

 Venus purpurascens Gmelin, Syst. Nat., vi., p. 3288, No. gi, 1792; Morch, Cat. Yoldi, ii., 



p. 16, 1853 (after Lister, pi. 303-304, figs. 144, 145, and Klein, Tent. Ostr., p. 157, pi. ii., 



fig. 57). 

 Tclliiia obliyua Wood, Gen. Conch., p. 152, pi. 41, figs. 4, 5, 1815; Dillwyn, Descr. Cat. 



Rec. Shells, i., p. 78, 1817. 

 Atnphidesma varicgata Lamarck, An. s. Vert., v., p. 490, 1818; Sowerby, Gen. Sh., pt. 9, 



fig. I, 1821 ; Orbigny, Moll. Cuba, ii., p. 239, 1853. 



Amphidesma obliqua Reeve, Conch. Icon. Atnphidesma, pi. i., figs. 5 a, b, 1853. 

 Semele purpurascens Morch, Cat. Yoldi, ii., p. 16, 1853; Krebs, Cat., p. 106, 1864; Arango, 



Moll. Cuba, p. 246, 1878; Morch, Poulsen Cat. W. I. Shells, p. 14, 1878; Krebs, Cat., 



p. 106, 1864; not of Sowerby, Reeve, or Lamarck. 

 Semele ornata Gould, Otia Conch., p. 239, 1862 ; Tryon, Am. Mar. Conch., p. 155, 1874 



(young shell). 

 f Semele formosum Krebs (as of Sowerby), Cat., p. 106, 1864; not of Sowerby. 



Pliocene of the Caloosahatchie beds, Florida, Dall ; of Costa Rica, Gabb ; 

 Pleistocene of Santo Domingo, Gabb; living in the Western Atlantic from 

 North Carolina to Rio Janeiro. 



This fine species has had a variety of names, but Morch's identification of 

 it with Gmelin's Venus purpurascens appears to be correct. The Atnphidesma 

 purpurascens of Lamarck, however, was founded on Ervilia nit ens and the 

 species so named by Reeve in the Iconica is distinct from the present one. 



Semele bellastriata Conrad. 

 Amphldcsma bellastriata Conrad, Journ. Acad. Nat. Sci. Phila., vii., p. 239, pi. xx., fig. 4, 



1837; Bull. Nat. Inst, ii., p. 192, 1842. 

 Amphidesma canccllata Orbigny, Moll. Cuba., ii., p. 241, pi. 25, figs. 42-44, 1853 ( ? not of 



Sowerby, 1853). 

 Semele nexilis Gould, Otia Conch., p. 238, 1862; Tryon, Am. Mar. Conch., p. 155, 1874; 



Dall, Proc. U. S. Nat. Mus., vi., p. 338, 1883. 

 Semele cancellata Dall, Bull. No. 37, U. S. Nat. Mus., p. 62, 1889. 

 Semele lota Adams, Bush, Trans. Conn. Acad., vi., part 2, p. 476, 1885. 



Pliocene of the Caloosahatchie River and Shell Creek, Florida, Dall and 

 Willcox ; living in the Western Atlantic and Antillean region from Cape 

 Hatteras, North Carolina, south to Cape San Roque, Brazil, in moderate 

 depths of water. 



This elegant little shell was described by Conrad among Nuttall's Californian 

 shells, and consequently the name has been overlooked. A careful comparison 

 of Pliocene and recent specimens shows a practical identity of character, the 



