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TERTIARY FAUNA OF FLORIDA 



^ Moerclla Fischer, Man. Conchj'l., p. 1147, 1887; T. donacina Linne. 

 ^Homala Fischer, Man. Conchyl., p. 1148, 1887; T. hyalina Gniel. {z^Omala Schum.) ; 

 not Homala Morch, 1853. 



> Pseudarcopagia Bertin, Nouv. Arch, du Mus., Paris, 2me Ser., i., pp. 229, 264, 1878 ; 



Tellina decussata Lamarck. 

 ?Liothyris Conrad in Kerr, Geol. Rep. N. Car., App., p. 9, 1873, not of Douville, 1880. 

 "^ Dona cilia Gray, List Brit. An., Moll., p. 39, 1851 ; Tellina donacina Linne; not Dona- 



cilla (Lam.) Philippi, 1836. 



> Maera H. and A. Adams, Gen. Rec. Moll., i., index, p. xxvii., 1856; not Maera Leach, 



Crust., 1813. 



> Elliptotellina Cossmann, Cat. Illustr. Eoc. Paris, p. 58, 1886. Type Tellina tellinella 



Lamarck. 



> Macaliopsis Cossmann, Cat. Illustr. Eoc. Paris, p. 63, 1886 ; Tellina Barrandei Desh. 



> Cyclotellina Cossmann, Cat. Illustr. Eoc. Paris, p. 67, 1886; Tellina lunulata Lamarck. 



> Arcopagiopsis Cossmann, Cat. Illustr. Eoc. Paris, p. 69, 1886; Tellina pustula Deshayes. 

 y- Oudardia Monterosato, Nom. Conch. Medit., p. 22, 1884; T. compressa Brocchi; 



Cossmann, Cat. 111., p. 75, 1886. 



> Tellinula Auct., Bucquoy, Dautz, et DoUf. Moll. Mar. Roussillon, ii., p. 654, 1898. Type 



Tellina fabula Gronovius. 



In discussing the synonymy of this genus it is first of all necessary to 

 eliminate from consideration the authors who were not consistently Linnean 

 in their nomenclature, such as Chemnitz, who was frankly polynomial, and 

 Poli, who organized for himself a unique quadrinomial system in which the 

 shell and animal had each a separate generic and specific name. Thus 

 simplified, the genus Tellina of Linne is recognizable as obviously hetero- 

 geneous according to modern ideas. The first author to name a type for it 

 was Lamarck in 1799. The species selected by him was T. virgata Linne. 

 The first author to subdivide the genus was Megerle von Miihlfeldt, in 181 1, 

 who divided the Linnean Tellens into two groups, one containing all the 

 elongated and rostrate species, and the other the suborbicular species. His 

 genus Angulus, proposed for the former group, is thus synonymous with 

 the group indicated as typical Tellina by Lamarck. Megerle's first species 

 was a peculiar compressed and acute form, T. lanceolata, for which, with its 

 allies, his name has been retained in an amended and restricted sense. In 

 1817 Schumacher proposed Omala, Phylloda, and Gastrana for peculiar forms 

 of Tellina, and Lamarck proposed Tellinides in the following year for a form 

 with a single adjacent lateral which he took for a third cardinal tooth. Leach 

 followed with Arcopagia and Macovia, and subsequent authors have proposed 

 numerous subdivisions, chiefly on characters of very small physiological im- 



