NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 119 
Subgenus Sabinella Monterosato, 1890. 
SABINELLA BAKERI Bartsch, 1917. 
Proc. U. S. Nat. Mus., vol. 53, No. 2207, p. 334, pi. 43, fig. 5. 
San Diego, California. 
SABINELLA PTILOCRINICOLA Bartsch, 1907. 
Proc. U. S. Nat. Mus., vol. 32, p. 555, pi. 53; vol. 53, p. 335, pi. 44, fig. 2, 
1917. 
Parasitic on Ptilocrimis, in 1,588 fathoms, off British Columbia. 
Genus ENTOCOLAX Voight, 1888. 
ENTOCOLAX LUDWIGI Voight, 1888. 
Zeitsciir. Wiss. Zool., vol. 47, p. 658, pi. 41-43. 
Bering Sea, parasite of MyriotrocJius. 
Genus CYTHNA Carpenter, 1864. 
CYTHNA ALBIDA Carpenter, 1864. 
Proc. Cal. Acad. Sci., vol. 3, p. 219. 
Southern California. Parasitic on starfishes. 
Genus HALIELLA Monterosato, 1873. 
HALIELLA ABYSSICOLA Bartsch, 1908. 
Proc. U. S. Nat. Mus., vol. 53, No. 2207, p. 336, pi. 43, fig. 8. 
In 822 fathoms off San Diego, California, and southward to latitude 27° 
north, off Point Pablo, Lower California, in 284 fathoms. 
HALIELLA LOMANA Dali, 1908. 
Proc. U. S. Nat. Mus., vol. 34, p. 253 ; vol. 53, p. 337, pi. 44, fig. 1. 
Off Point Loma, San Diego County, California, in 650 fathoms. 
Genus STROMBIFORMIS Da Costa, 1778. 
STROMBIFORMIS ALASKENSIS Bartsch, 1917. 
Proc. U. S. Nat. Mus., vol. 53, No. 2207, p. 339, pi. 45, fig. 1. 
Dutch Harbor, Unalaska, Aleutian Islands. 
STROMBIFORMIS CALIFORNICUS Bartsch, 1917. 
Proc. U. S. Nat. Mus., vol. 53, No. 2207, p. 340, pi. 45, fig. 5. 
Catalina Island, to San Diego, California. 
STROMBIFORMIS ALMO Bartsch, 1917. 
Proc. U. S. Nat. Mus., vol. 53, No. 2207, p. 342, pi. 46, fig. 5, 
Santa Rosa Island to San Diego, California. 
Genus ACLIS Loven, 1846. 
Subgenus Geaphis Jeffreys, 1869. 
GRAPHIS SHEPARBIANA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, p. 342. 
San Pedro to San Diego, California. 
