TRANSACTIONS OF WAGNER 

 1264 



TERTIARY FAUNA OF FLORIDA 



them here, but they all appear to me to be immature, and might when adult 

 have taken on more distinctive features. I have seen no unmistakable fossil 

 morrhuana except from the Pleistocene. 



Callocardia (Agriopoma) subnasuta Conrad. 

 Cytherea subnasuta Conrad, Proc. Acad. Nat. Sci. Phila.,^ i., p. 28, 1841 ; Journ. Acad. 



Nat. Sci. Phila., viii., p. 183, 1842; Fos. Medial Tert, p. 72, pi. xli., fig. 3, 1845 



(Calvert Cliffs, Md.). 

 Venus subnasuta Orbigny, Prodr. Pal., iii., p. 108, 1852. 



Miocene of Maryland at Cove Point, Plum Point, Jones Wharf, Calvert 

 Cliffs, and other points in St. Mary's County, and of Virginia at Yorktown. 

 ?Miocene of the Peedee River, South Carolina (Tuomey and Holmes). 



It is with considerable doubt that I admit this form to specific rank. The 

 National Museum contains a specimen named by Conrad from the original 

 locality, and it is certainly more produced behind and more rostrate than either 

 C. Sayana or C. morrhuana, but in all other respects appears identical with 

 C. Sayana. It also appears to be rare, and excites a suspicion that it may 

 prove to be only a casual mutation of C. Sayana. The shell figured under this 

 name by Tuomey and Holmes appears to be something else. 



Genus PIT ARIA Romer (em.). 



Pitar Romer, Krit. Unters., p. 15, 1857; Malak. Blatt., ix., p. 58, 1862 (olim) ; Meek, 



Pal. Upper Missouri, p. 179, 1876; Bucquoy, Dautzenberg, and Dollfus, Moll. Rous- 



sillon, ii., p. 329, 1893. Type Venus tumens Gmelin (-)- Cytherea striata Sowerby). 

 <Caryatis Romer, Mai. Blatt., ix., p. 58, 1862; Mon. Venus, i., p. 79, 1867; Stoliczka, 



Cret. Pel. India, p. 151, 1871; Tryon, Syst. Condi, iii., p. 178, 1884; not Caryatis 



Hiibner, Lepidoptera, 1816. 

 ~^>Dione Gray, P. Z. S., 1847, p. 183 (Venus dione Linne) ; Deshayes, Cat. Conch. Brit. 



Mus., p. 55, 1853; Romer, Krit. Unters., p. 15, 1857; Mon. Venus, i., p. 127, 1868; 



Stoliczka, Cret. Pel. India, p. 151, 1871; Meek, Pal. Upper Missouri, p. 178, 1876; 



Tryon, Syst. Conch., iii., p. 178, 1884; not Dione Gray, 1851, or Hubner, 1816. 

 > Venus Megerle von Muhlfeld, Mag. Ges. Naturf. Freunde zu Berlin, v., p. 15, 1811 



(Venus dione Linne) ; not Venus Lamarck, 1799. 

 ~>Hystero concha Fischer, Man. de Conchyl., p. 1079 (in synonymy), 1887; Venus dione 



Linne. 

 >Tivelina Cossmann, Cat. Illustre bas. Paris, i., p. 107, 1886 (Cytherea tellinaria 



Deshayes) ; Fischer, Man. de Conchyl., p. 1080, 1887. 

 Pitaria Dall, Proc. U. S. Nat. Mus., xxvi., No. 1312, p. 353, 1002. 



