Catalogue: Recently Described AIollusca 187 



Genus iuccrtrc scdis. 



COKERIA ^larshall, 1916. 



CoArrw }iJarshall, Naut., XXIX, 1916, p. 133. 

 Type: Cokcria southaUi Marshall. 



Cokeria southalli Marshall. 



Cokcria sontlialU Marshall, Naut., XXIX, 1916, p. 133, pi. IV. 



Type locality: James River, Huron, S. D. 



This genus and species are founded on an unique specimen collected by 

 the U. S. Bureau of Fisheries. It seems to combine the characters of both 

 Qnadnda and Lainpsilis, although the preponderance of the characters ap- 

 pear to be Quadruline. Indeed, but for the hinge teeth, which are quite like 

 those of Lainpsilis, it would be considered a Quadrula. It is quite possibly 

 an abnormality of Quadrula undulata (Bar.). Unfortunately nothing is 

 known of the soft parts. Additional material is greatly to be desired. 



Family CYRENID;E. 

 Genus C ARENA Lamarck, 1818. 



Section POLYMESODA Rafinesque, 1820. 



Cyrena alabamensis Clessin. 



Cyrena alabamensis Clessin, Con. Cab., Cycladeen, 1869, p. 114, pi. XV^III, 



figs. 3-4. 

 Type locality: Alabama. 



Cyrena donaciformis Sowerby. 



Cyrena donaciformis Sowerby, Con. Icon., Cyrena, 1878, p. 108, pi. XIX, fig. 



108. 

 Type locality : Florida. 



Is iloridana Con. according to von Martens (Zool. Rec, Moll., 1877, p. 

 81) and Dall (29, p. 1447). 



Cyrena protexta Conrad. 



Cyrena protexta Conrad, Am. J. of Con., Y, 1869, p. 107, pi. XII, fig. 3. 



Type locality: Tampa Bay, Fla. 



Is iloridana Con. according to Tryon, (A. J. of C, V, 1870, p. 227) and 

 Dall (29, p. 1447). 



