TRANSACTIONS OF WAGNER 

 800 



TERTIARY FAUNA OF FLORIDA 



Mfldiohi caribcea Phil., Abbild. und Beschr. , iii., p. 20, pi. 2, fig. 5, 1847; Zeitschr. fiir 



Mai. for 1847, p. 116. 

 Modiola antillaruin Phil., op. cit., p. 20, pi. 2, fig. 4, 1847; Zeitschr., p. 116 (not of 



Orbigny ; young shell). 

 lifyfl/iis /if/iophai^i/s Gihhss, S. Car. Cat., p. xxii., 1848; not of Linne. 

 LUhflphagus nigra Morch, Cat. Yoldi, ii., p. 56, 1853. 

 Lithodoiims aiitillarum Reeve, Conch. Icon., x., pi. 2, fig. 7, 1857. 



Oligocene silex beds of Ballast Point, Tampa Bay, Florida, Dall ; lecent 

 at Bermuda, and from South Carolina southward through the West Indies 

 to Rio Janeiro, Brazil. 



Lithopliaga nuda n. s. 

 Plate ii. Figure 7; Plate 35, Figure 37. 



Oligocene silex beds at Ballast Point, Tampa Bay, Florida, where it is 

 the most common species, and its burrows, or their casts, very numerous. 



Shell large, thin, closely resembling L. nigra, but from which it may be 

 instantly discriminated by the absence of all transverse or radial striation. 

 Alt. 17 (?), lat. 50, diam. 15.7 mm. 



Few of the specimens retain the outer markings of the shell, but those 

 that do are easily recognized by the smooth surface, only sculptured by incre- 

 mental lines. From the Dibcriis group, which also have unstriated shells, it is 

 distinguished by its cylindrical form, large size, absence of sulcations and of 

 the calcareous mantle. 



Lithophaga (Myoforceps) aristata Dillwyn. 

 Mytilus aristatns (Solander MS.) Dillwyn, Cat. Rec. Sh., i., p. 303, 1817. 

 Modiola caudigcra Lam., An. s. Vert., vi., p. 116, 1819 ; (after Enc. Meth., pi. 201, fig. 



8) Phil., Abb., ii., p. 149, pi. i, fig. 5, 1846. 

 Mytilus catidigerus Gihhe.s, Cat. S. Car., p. xxii., 1848. 

 Lithodomtts aristahis VoYhei 3.nA Manley, Brit. Moll., ii., p. 212, 1851. 

 Lithodomus caudigerus Sby., Genera, Lith., fig. 4, 1824; Reeve, Conch. Icon., x., pi. 



iii., fig. 16, 1857. 

 LithopJiagus aristatus Stimpson, Checkl. Rec. Sh., p. 2, i860. 

 Lithophagus forficatus RaMeneX, Proc. Acad. Nat. Sci. Phila. for 1S61, p. 44 ; Tryon, Am. 



Mar. Conch., p. 188, 1873 ; Dall, Bull. U. S. Nat. Mus., No. 37, p. 38, 1889. 

 Oligocene of the silex beds at Ballast Point, Tampa Bay, Florida ; recent 

 from Cape Fear, North Carolina, south to the West Indies, east to the Red 

 Sea, west to Mazatlan on the Pacific coast of Mexico. 



Only fragments probably referable to this form were obtained at Ballast 



