TRANSACTIONS OF WAGNER 

 1046 



TERTIARY FAUNA OF FLORIDA 



Subgenus Cyinatoica Dall, 1889. 



Shell small, thin, concentrically undulate, strongly flexed behind and 

 elongated and inflated anteriorly. Type Tellina undulata Hanley (-\-occi- 

 dentalis Dall). 



This very peculiar little type appears as early as the Oligocene and has 

 persisted in the Antillean and Middle American region until the present time. 



Macoma calcarea Gmelin. 



Tellina calcarea, testa ovata, etc., Chemnitz, Conch. Cab., vi., p. 140, pi. 13, fig. 136. 1782. 

 Tellina calcarea Gmelin, Syst. Nat, vi., p. 3236, No. 38, 1792. 

 Tellina lata Gmelin, Syst. Nat., vi., p. 3237, No. 48, 1792. 

 Tellina sabulosa Spengler, Skrift. Naturh. Selsk., iv., p. 114, 1794; Morch, Fort., Gronl. 



Blod., p. 18, 1877. 

 Macoma tenera Leach, App. to Ross's Voy., p. 62, 1819; Journ. de Phys., vol. 88, p. 465, 



1819. 

 Tellina proxima (Brown MS.) Sowerby, Zool. Beechey's Voy., p. 154, pi. 44, fig. 4, 



1839; Smith, Wern. Mem., viii., p. 105, pi. i, fig. 21, 1839; Hanley, Thes. Conch., 



Tellina, p. 313, pi. 66, fig. 264 and pi. 59, fig. 115, 1847; Forbes and Hanley, Brit. 



Moll., i., p. 307, pi. 21, fig. I, 1850; iv., p. 251, pi. 133, fig. 3, 1853; Stimpson, Shells 



of N. Engl., p. 21, 1851. 



Tellina sordida Couthouy, Boston Journ. Nat. Hist., ii., p. 59, pi. 3, fig. u, 1838. 

 Sanguinolaria sordida Gould, Inv. Mass., p. 67, 1841. 



Pleistocene of Scandinavia, Scotland, Greenland, Siberia, and Alaska; 

 living in the Arctic and boreal seas in two to one hundred fathoms, extending 

 southward on the Atlantic coast to Long Island Sound, and on the Pacific to 

 the coast of Oregon and Northern Japan, in the southern part of its range only 

 in deep water. 



The National Mus'eum possesses specimens which appear to be Macomas 

 from the Eocene of Prairie Creek, Wilcox County, Alabama; Caton's Bluff, 

 Conecuh River, Alabama; White Bluff, Arkansas, and elsewhere, but not in 

 satisfactory condition for description. The genus appears to be represented 

 also in the Oligocene sandstone of the Isthmus of Panama, near Gatun, by 

 M. (Psammacoma) dariena Conrad (1855,+ Tellina seinilo'vis Gabb, 1861). 

 The Oligocene and later species will be treated in the order of their place in 

 the genus. 



Macoma? calhounensis n. sp. 

 PLATE 47, FIGURE 10. 



Oligocene of the Chipola marl, Chipola River near Bailey's Ferry, Calhoun 

 County, Florida; Burns. 



