66 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



Order PULMONATA. 



Suborder Basommatophora. 



Superfamily AKTEOPHILA. 



Family ELLOBIIDAE. 

 Genus PHYTIA Gray, 1821. 



PHYTIA SETIFER Cooper, 1872. 



Proc. Cal. Acad. Sci., vol. 4, p. 172. 

 Humboldt Bay to San Francisco Bay. 



Genus PEDIPES Scopoli, 1777. 



PEDIPES UNISULCATUS Cooper, 1866. 



Proc. Cal. Acad. Sci., vol. 3. p. 294, fig. 29. 



San Pedro, California, to the Gulf of California. 



PEDIPES LIRATUS Binney, 1860. 



Proc. Acad. Nat. Sci., l'hila., p. 154 ; Proc. U. S. Nat. Mus., vol. 8, p. 279, pi. 



18, fig. 5. 

 San Diego, California, to the Gulf of California. 



Genus MELAMPUS Montfort, 1810. 



MELAMPUS OLIVACEUS Carpenter, 1856. 



M;izatlan Cat., p. 178; Proc. U. S. Nat. Mus., vol. 8, pi. 18, fig. 16. 

 Monterey Bay (Salinas River) to Mazatlan, Mexico. 



Superfamily PETROPHILA. 



Family GADINIIDAE. 

 Genus GADINIA Gray, 1824. 



GADINIA RETICULATA Sowerby, 1835. 



Proc. Zool. Soc, p. 6; Ainer. .Tourn. Conch., vol. 6, pi. 2, 4, 1870. 

 Trinidad and Farallones Islands to Cape San Lucas. 



Family SIPHONARIIDAE. 

 Genus SIPHONARIA Sowerby, 1824. 



Subgenus Libiola Dall, 1870. 



LIRIOLA THERSITES Carpenter, 1864. 



Ann. Nag. Nat. Hist., vol. 14, p. 425; Amer. Journ. Conch., vol. 6, pi. 4, 



tig. 8; pi. 5, tig. 2, 1870. 

 Aleutian Islands to the Strait of Fuca. 



