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785 



TERTIARY KAUNA OF FLORIDA 



Upper Miocene of York River, Virginia, Harris; Pleistocene of Sankoty 

 Head, Massachusetts, Verrill; recent from the Arctic Ocean south to Cape Fear, 

 North Carolina, on the Atlantic coast; also on the northern coasts of Europe. 



The presence of this species in the Virginia Miocene is established by 

 some beautifully preserved small valves with the characteristic sculpture 

 obtained by Mr. Harris. 



The A. delnmbis Conrad (Proc. Acad. Nat. Sci. Phila. for 1862, p. 582) is 



a mere list-name, never described or referred to a locality. A well-defined 



species is the A. sitbcostata Conrad, from the Miocene of the Carrizo Creek 



'beds, Colorado Desert, California. (Pac. R. R. Reps., v., p. 325, pi. 5, fig. 34, 



1855.) It is strongly radially plicated. 



Anomia limatula Dall. 



PI.ATK 35, FIGURE 19. 

 A iii >iitia liinatiild Dall, 1'roc. U. S. Nat. Mus., i., p. 15, 1878. 



Pliocene of Ventura County, California, eight miles inland and two hundred 

 feet above the sea level, Bowers; of Coronado beach, San Diego, California, 

 Hcmphill ; and of Pacific beach, near San Diego, Stearns ; Pleistocene of 

 Spanish Bight, Coronado beach, San Diego, and of San Pedro Hill, Los 

 Angeles County, California, Stearns. 



A fine, large species, which is characterized by its peculiar, finely granulose 

 surface, devoid of all normal radial sculpture, and which still retains on its 

 yellowish valves traces of dark purple, irregularly radial blotches. The cal- 

 careous plug of this species is peculiar, being hollow, and the cylinder incom- 

 plete on one side. 



From the Pleistocene of San Pedro Hill, California, has been obtained 

 A. lainpc Gray, the common Anomia of the recent fauna of the coast (Gabb, 

 Pal. Cal., ii., p. 106, 1868). This is almost invariably radially ribbed and 

 often concentrically grooved, and has a polished surface quite unlike that of 

 A. liniatnla. It has also been obtained by Stearns at Spanish Bight, Coronado 

 beach, San Diego, California. 



Superfamily MYTILACEA. 



FAMILY MYTILID/K. 

 Grnus MYTILTJS (L.) Bolti-n. 



Myliliis Lin., Syst. Nat., Ed. x., p. 704, 1758 ; Miillcr, Xool. Dan. 1'roilr., p. 249, 1776 ; 

 D.i Costa, Brit. Conch., p. 214, 1778; Hi u^uuVe, Kn< yc . Meth., i., xiii., 1789; 

 Humphrey, Mus. Calon., pp. 42, 43, 1797. 



