TRANSACTIONS OF WAGNER 

 IAI2 



TERTIARY FAUNA OF FLORIDA 



Section Carditamera Conrad. 

 Carditamera Conrad, Fos. Medial Tert., p. n, 1838; type Cypricardia arata Conrad, 1832; 



Proc. Acad. Nat. Sci. Phila., xii., p. 231, 1861 ; xiv., p. 578, 1863. 

 Lazaria Gray, Ann. Mag. N. Hist., xiv., p. 22, 1854; type L. radiata Reeve; H. and A. 



Adams, Gen. Rec. Moll., ii., p. 489, 1857; Carpenter, Suppl. Rep. Brit. Assoc., p. 643, 



1864. 

 Lazariella Sacco, Bolletino Mus. dei Zoologia, Torino, xiv., No. 349; Moll. Piem. e 



Liguria, p. 112, 1899. Type Cardita subalpina Mich. 



Section Glans Megerle von Miihlfeld. 



Glans Megerle, Entwurf, p. 68, 1811; type Cardita trapezia Linne (sp.) ; Morch, Cat. 

 Yoldi, ii., p. 38, 1853; Tryon, Struct, and Syst. Conch., iii., p. 257, 1872. 



Subgenus BEGUINA Bolten. 

 Beguina Bolten, Mus. Bolt, p. 160, 1798; type Chama phrenetica Born; Mus. Bolt, zweite 



ausg., p. 112, 1819. 

 Beguina Morch, Cat. Yoldi, ii., p. 38, 1853 ; Tryon, Struct, and Syst. Conch., iii., p. 257, 



1872. 

 Azarella Gray, Ann. Mag. Nat. Hist., xiv., p. 22, 1854. 



The earliest species which resembles Cardita s. s. in our Tertiary, but which 

 may really be a Carditamera, is C. subquadrata Conrad, 1848, from the Eocene 

 of the Orangeburg district. This is not the subquadrata Gabb, later renamed 

 perantiqua by Conrad. These South Carolinian Eocene species have been 

 poorly figured and inadequately described. They are probably of the lower 

 Claibornian horizon, though this requires further investigation. C. macro- 

 pleura Conrad, at first supposed to be from the Eocene of Virginia, was de- 

 scribed under a misapprehension in 1869 and withdrawn later by the author. 



These erroneous references being disposed of, we find the known species of 

 Carditamera beginning in the Oligocene. 



Cardita (Carditamera) tegea n. sp. 



PLATE n, FIGURE 4. 



Cardita (Carditamera) recta Dall ; Trans. Wagner Inst, iii., part i., p. 189, pi. xi., fig. 4, 

 1890; not of Conrad, 1868. 



Oligocene silex beds of Ballast Point, Tampa Bay, Florida ; of Alum Bluff, 

 Chattahoochee River, and of the Chipola River, Calhoun County, Florida; 

 Dall, Burns, and Shepard. 



Shell elongate inequilateral, with low, rather anterior beaks and about six- 

 teen strong radial more or less carinated and imbricated ribs, the anterior ribs 



