TRANSACTIONS OF WAGNER 

 984 



TERTIARY FAUNA OF FLORIDA 



Tagelus californianus Conrad. 

 Cultellus californianus Conrad, Journ. Acad. Nat. Sci. Phila., ist Ser., vii., p. 233, pi. 18, 



fig. 3, 1838. 

 Solecurtus californianus Carpenter, Suppl. Rep. Brit. As., p. 638, 1863. 



Pliocene of the San Diego well, Hemphill ; Pleistocene of San Pedro and 

 San Diego, California, and San Ignacio Lagoon, Lower California, Hemphill ; 

 recent from San Pedro to Lower California. 



This species is extremely abundant in the Pleistocene sands of San Pedro 

 Hill. 



Section Mesopteura Conrad. 



Mesopleura Conrad, Cat. Solcnida, Am. Journ. Conch., iii., App., p. 23, 1867. Type 

 Solen divisus Spengler. 



Shell with an internal radial rib, ventrally directed from the submedian 

 beaks ; ends of the valves rounded, and the form of the shell usually more or 

 less arcuate ; otherwise like Tagelus. 



Tagelus divisus Spengler. 



Solen divisus Spengler, Skrift. Nat. Selsk., iii., p. 96, 1794. 

 Solen bidens (etc.) Chemnitz, Conch. Cab., xi., p. 203, pi. 198. fig. 1939, 1795; Dillwyn, 



Cat. Rec. Sh., p. 65, 1817. 



Solen bidentatus Spengler, op. cit., iii., part 2, p. 104, 1794. 

 Solen fragilis Pulteney, Hist. Dorset, p. 28, pi. 4, fig. 5, 1799. 

 Psammobia taniata Turton, Dithyra Brit., p. 85, pi. 8, fig. 3, 1822. 

 Solen centralis Say, Journ. Acad. Nat. Sci. Phila., ii., p. 316, 1822 ; Binney's Say, p. 104, 



1858; not of Sowerby. 

 Solecurtus fragilis Conrad, Am. Mar. Conch., p. 19, pi. 4, fig. i, 1831 ; Proc. Acad. Nat. 



Sci., iii., p. 24, 1846. 



Solecurtus bidens Forbes and Hanley, Brit. Moll., i., p. 266, 1850. 

 Leguminaria floridana Conrad, Proc. Acad. Nat. Sci. Phila., iv., p. 121, 1848. 

 Solecurtus Carpenteri Dunker, P. Z. S., 1861, p. 426. 

 Mesopleura bidentata Conrad, Am. Journ. Conch., iii., App.. p. 26, 1867. 

 Solecurtus subteres Emmons, Geol. N. Car., p. 299, fig. 228, 1858; not of Conrad, 1838. 

 Solecurtus equalis Conrad, Proc. Acad. Nat. Sci. Phila. for 1862, p. 571, 1863. 

 Tagelus divisus Dall, Proc. Bost. Soc. N. Hist., xiii., p. 251, 1870. 

 Machccra pcllucida (de Gerville MS.) et M. fragilis Dautzenberg, Nantes et la Loire inf., 



Moll., p. 15, 1898. 

 Not Solecurtus centralis Sowerby, Conch. Icon., fig. 18, 1874. 



Fossil in the Pliocene of the Carolinas and in the Caloosahatchie marls, 



