50 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
Genus SANGUINOLARIA Lamarck, 1799. 
* Section NUTTALLIA Dali, 1897. 
SANGUINOLARIA NUTTALLII Conrad, 1837. 
.Tourn. Acad. Nat. Sci. Phila., vol. 7, p. 230, pi. 17, fig. 6. 
San Pedro to Magdalena Bay, Lower California. ?Japan. 
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 MESOPIEUEA Conrad, 1837. 
TAGELUS SUBTERES Conrad, 1837. 
Journ. Acad. Nat. Sci. Phila., vol. 7, p. 233, pi. 17, fig. 10. 
Santa Barbara, California, to Panama. 
/V 
Superfamily SOLENACEA. 
Family SOLENIDAE. 
Genus SOLEN (Linnaeus) Scopoli, 1777. 
SOLEN SICARIUS Gould, 1850. 
Proc. Boston Soc. Nat. Hist, vol. 3, p. 214; Rep. U. 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 Dali, 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. 
