TRANSACTIONS OF WAGNER 

 1246 



TERTIARY FAUNA OF FLORIDA 



meroe L.) ; Romer, Mon. Venus, ii., p. i, 1870; Cossmann, Cat. Illustr. bas. Paris, 



p. 112, 1886. 

 Cuneus Megerle von Miihlfeld, Mag. Ges. Naturf. Freunde zu Berlin, v., p. 50, 1811 



(Venus meroe L.) ; Deshayes, Cat. Conch. Brit. Mus., i., p. 41, 1853; not of Da 



Costa, 1778. 

 Meroe Schumacher, Essai, p. 149, 1817 (V. meroe L.) ; Gray, Analyst, viii., p. 303, 1838; 



Tryon, Syst. Conch., iii., p. 179, 1884; Fischer, Man. de Conchyl., p. 1081, 1887. 

 Sunettina Jousseaume, Le naturaliste, Sept., 1901, p. 208. Type S. sunettina Jousseaume, 



Aden. 



This well-known genus may be separated into sections as follows : 



Sunetta s. s. 



Shell elongate-ovate, more or less inequilateral, plump, concentrically sul- 

 cate or striate. Type S, scripta Linne. 



Solanderina Dall, 1902. 



Shell inflated, smooth, subequilateral, otherwise as in Sunetta s. s. Type 

 S. solandri Gray. 



Sunettina Jousseaume. 



Shell suborbicular, compressed, smooth. Type 5". sunettina, menstrualis, etc. 

 The dental formula of Sunetta is L - IOIOIO - OI , the edge of the posterior 



R.OIOIOI.IOI 



left cardinal is finely granular, though in Solanderina it is smooth. The liga- 

 ment is external but set in a deeply excavated escutcheon ; the impressed lunule 

 is unequally divided, the right portion larger; the posterior end of the shell 

 is shorter than the anterior ; the pallial sinus is wide, rather short, and rounded ; 

 the inner margins of the valves are conspicuously crenulate. The lateral laminae 

 are rather elongated. 



The genus Sunetta is now an inhabitant of tropical seas, West Africa to 

 China and the Indo-Pacific region, but in the Eocene it existed in the Paris 

 basin, several fossil species being reported thence. 



. 

 Genus GAFRARITJM Bolten. 



<^Gafrarium Bolten, Mus. Boltenianum, p. 176, 1798; ed. ii., p. 123, 1819. No type 



selected; by elimination of Cytherea (sp.) Bolten and Corbis Cuvier, 1817, Venus 



pectinata Linne remains as type. 

 = Crista Romer, Krit. Unters., p. 15, 1857, Venus pectinata L. ; Mon. Venus, i., p. 173, 



1869; Stoliczka, Cret. Pel. India, p. 152, 1871; Tryon, Syst. Conch., iii., p. 179, 1884; 



Fischer, Man. de Conchyl., p. 1080, 1887. 

 Paphia Oken, Lehrb. d. Naturg., p. xii. (not p. 732), 1815; Venus divaricata Linne; riot 



Paphia Bolten, 1798, or Lamarck, 1801. 



