TRANSACTIONS OF WAGNER 



1414 



TERTIARY FAUNA OF FLORIDA 



Cardita pseudocarincUa Orbigny, Prodr. Pal., iii., p. 114, No. 2133, 1857. 



Carditamera arata Meek, Checkl. Mioc. Fos. N. Am., p. 7, 1864 ; Heilprin, Trans. Wagner 



Inst, i., pp. 102, 103, 1886 ; Whitfield, Mioc. Moll. N. J., p. 57, pi. ix., figs. 5-6, 1886. 

 Carditamera aculeata Conrad, Proc. Acad. Nat. Sci. Phila., xiv., p. 585, 1863 ; Am. Journ. 



Conch., ii., p. 73, pi. iv., fig. 5, 1866. 



Miocene of Shiloh and Jericho, New Jersey ; near Easton, Maryland ; 

 Petersburg, Coggins Point, and Grove Wharf, James River, Yorktown, York 

 River, and other Miocene localities in Virginia; Natural Well and Magnolia, 

 Duplin County, North Carolina ; Darlington, South Carolina ; sixteen miles 

 southwest of Tallahassee, Coe's Mill, Liberty County, and on the Chipola 

 River, Calhoun County, Florida; Pliocene of the Waccamaw district, South 

 Carolina, and of the Caloosahatchie, Myakka River, Shell Creek, Alligator 

 Creek, and De Leon Springs in Florida. 



This is the most wide-spread and abundant species of our Miocene and 

 Pliocene. The differences upon which Conrad founded his C. carinata are 

 inconstant and the specific name is preoccupied, for which reason Orbigny 

 substituted pseudocarinata. Neither name is needed. Under the name of 

 Cardita arata Tuomey and Holmes figure what appears to be Conrad's C. pro- 

 tracta. Conrad's C. aculeata is merely the young of C. arata, which is always 

 more blunt than the adult and sometimes quite expanded behind with the 

 imbrications produced into small spines. Conrad's figure does not agree very 

 closely with that of his type specimen given by Whitfield. 



Cardita (Carditamera) protracta Conrad. 

 Carditamera protracta Conrad, Proc. Acad. Nat. Sci. Phila., i., p. 305, 1843 ; Fos. Medial 



Tert, p. 65, pi. xxxvii., fig. i, 1845; Proc. Acad. Nat. Sci. Phila., xiv., p. 579, 1863; 



Meek, Checkl. Mioc. Fos. N. Am., p. 7, 1864. 



Cardita protracta Orbigny, Prodr. Pal., iii., p. 114, No. 2134, 1857. 

 TCardita arata Tuomey and Holmes, Pleioc. Fos. S. Car., p. 65, pi. xix., figs. 4, S> 1855 ; 



not of Conrad. 



Miocene of Jones Wharf, Patuxent River, St. Mary's County, Maryland ; 

 Conrad, Harris, Burns. 



This form is very close to C. arata, yet seems to have some distinguishing 

 characters, and the name should, perhaps, be retained. 



Cardita (Carditamera) Vaughani n. sp. 

 PLATE 56, FIGURE 10. 



Miocene of Jackson's Bluff and of the Chipola River, five miles below the 

 County Bridge, formerly Bailey's Ferry; T. W. Vaughan. 



