50 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



Genus SANGUINOLARIA Lamarck, 1799. 



Section NUTTALLIA Dall, 1897. 



SANGUINOLARIA NUTTALLII Conrad. 1837. 



Journ. Acad. Nat. Sci. l'liila., vol. 7, p. 230, pi. 17, fig. G. 

 San Pedro to Magdalena Bay, Lower California. VJapan. 



Genus HETERODONAX Morch, 1853. 



HETERODONAX BIMACULATA Linnaeus, 1758. 



Syst. Nat., ed. 10, p. 677 ; Conch. Icon., Telling, pi. 18. fig. 94. 

 Monterey, California, to Panama. Also Atlantic. 



Genus TAGELUS Gray, 1847. 



TAGELUS CALIFORNIANUS Conrad, 1837. 



Journ. Acad. Nat. Sci. Phila., vol. 7, p. 233, pi. 18, fig. 3. 

 Santa Barbara, California, to Gulf of Tehuantepec. 



TAGELUS AFFINIS C. B. Adams, 1852. 



Panama Shells, p. 300. 



Santa Barbara, California, to Panama. 



Section MES0PLEURA Conrad, 1837. 



TAGELUS SUBTERES Conrad, 1837. 



Journ. Acad. Nat. Sci. Phila., vol. 7, p. 233, pi. 17, fig. 10. 

 Santa Barbara, California, to Panama. 



Superfamily SOLENACEA. 

 Family SOLENIDAE. 



Genus SOLEN (Linnaeus) Scopoli, 1777. 



SOLEN SICARIUS Gould, 1850. 



Proc. Boston Soc. Nat. Hist., vol. 3, p. 214; Rep. IT. S. Expl. Exp. Moll. 



p. 287, fig. 501. 

 Vancouver Island to San Quentin, Lower California. 



SOLEN ROSACEUS Carpenter, 1864. 



Suppl. Rep. Brit. Assoc, p. 638; Ann. Mag. Nat. Hist., ser. 3, voL 15, p. 177 

 Santa Barbara, California, to Gulf of California. 



Genus ENSIS Schumacher, 1817. 



ENSIS CALIFORNICUS Dall, 1899. 



Proc. U. S. Nat. Mus., vol. 22, p. 110. 

 Monterey, California, to Gulf of California. 



Genus SILIQUA Megerle, 1811. 



SILIQUA LUCIDA Conrad. 1837. 



Journ. Acad. Nat. Sci., vol. 7, p. 231, pi. 17, fig. 8. 



Monterey, California, to Todos Santos Bay, Lower California. 



