86 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
HYALINA MYRMECOON Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 308. 
San Diego, California. 
Genus CYSTISCUS Stimpson, 1865. 
CYSTISCUS POLITULUS (Cooper MS.) Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 307. 
Santa Barbara, California, to Cape San Lucas. 
CYSTISCUS MINOR C. B. Adams, 1852. 
Panama Shells, p. 264. — Tryon, Man., vol. 5, pi. 12, fig. 65. 
San Pedro, California, to Panama. 
Genus MEROVIA^ Dali, 192je(. 
MEROVIA PYRIFORMIS Carpenter, 1865. 
.lourn. de Conchy 1., vol. 13, p. 148. — Try'on, Man., vol. 5, pi. 13, fig. 38. 
Peril Strait, Alaska, to Mazatlan, Mexico. 
Family VOLUTIDAE. 
Genus FULGORARIA Schumacher, 1817. 
Subgenus Boeeomelon Dali, 1918. 
BOREOMELON STEARNSII Dali, 1872 . 
Proc. Cal. Acad. Sci., vol. 4, p. 270, pi. 1, fig. 1. 
Pribilof, Aleutian, and Shumagin Islands, Alaska. 
Genus PHENACOPTYGMA Dali, 1918. 
PHENACOPTYGMA CORTEZI Dali, 1908. 
Bull. Mus. Comp. ZooL, vol. 43, No. 6, p. 292. 
Cortez Bank and off San Diego, California, in deep water. 
Family MITRIDAE. 
Genus STRIGATELLA Swainson, 1840. 
Subgenus Atrimitra Dali, 1918. 
ATRIMITRA IDAE Melvill, 1893. 
The Conchologist, vol. 2, p. 140, pi. 1, fig. 6. 
Farallones Islands to Cortez Bank, California. 
ATRIMITRA IDAE MONTEREYE?fSfS' Berry, 1920. 
Proc. Mai. Soc. London, vol. 14, p. 31, figs. 1-4. 
Monterey to San Diego, California. 
ATRIMITRA CATALINAE Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 308. 
Crescent City to San Diego, California. 
ATRIMITRA DIEGENSIS Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 309. 
Catalina Island to San Diego, California. 
