108 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
TRITONALIA CIRCUMTEXTA Steams, 1871. 
Conch. Mem., No. 6, p. 1 ; Amer. Journ. Conch., vol. 7, pi. 14, fig. 14. 
Trinidad to San Pedro, California. N". (ocJce^ 
TRITONALIA CIRCUMTEXTA CITRICA Dal!, 1919. 
'Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 334. 
Santa Barbara Islands, to Scammon Lagoon, Lower California. 
TRITONALIA INTERFOSSA Carpenter, 1864. (Plate 11, fig. 8.) 
Proc. Acad. Nat. Sci. Phila., p. 64. — Tryon, Man., vol. pi. 39, fig. 484. 
Semidi Islands, Alaska, to San Diego, California. 
TRITONALIA INTERFOSSA ALPHA (Carpenter) Dali, 192^. (Plate 13, fig. 9.) 
This Bulletin. 
Vancouver Island to Mendocino County, California. 
TRITONALIA INTERFOSSA BETA (Carpenter) Dali, 1919. 
Proc. Biol. Soc. Wash., vol. 32, p. 250. 
Monterey, California, 
TRITONALIA INTERFOSSA CLATHRATA (Steams) Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 334. 
Monterey to Catalina Island, California. 
TRITONALIA INTERFOSSA MINOR Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 334. 
Catalina Island, California. 
TRITONALIA INTERFOSSA ATROPURPUREA (Carpenter) Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 334. 
Neah Bay, Washington, to San Diego, California. 
TRITONALIA FOVEOLATA Hinds, 1843. 
Proc. Zool. Soc., p. 127 ; Zool. Voy. Sulphur, Moll., pi. 3, figs. 15, 16. 
Monterey to San Diego, California. 
TRITONALIA STEARNSI Hemphill, 1911. 
Trans. San Diego, Soc. Nat. Hist., vol. 1, No. 3, p. 100. 
Monterey, California. 
TRITONALIA SCLERA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 334. 
Coast of Washington to Venice, California. 
TRITONALIA SUBANGULATA Steams, 1873. 
Conch. Mem., No. 12, p. 5, pi. 1, fig 4; Proc. Cal. Acad. Sci., vol. 5, p. 81, 
pi. 1, fig. 4. 
Monterey to Santa Barbara Islands. 
TRITONALIA MICHAELI Ford, 1888. 
Proc. Acad. Nat. Sci. Phila., 1888, p. 188, figs. 
Orcas Island, Washington, to Gulf of California. (P 6 
TRITONALIA FRASERI, Oldroyd, 1920. 
Nautilus, vol. 33, p. 13^, pi. 4, figs. 1, 2. 
Departure Bay, Vancouver Island. 
TRITONALIA BARBARENSIS Gabb, 1866. (Plate 6, fig. 5; plate 15, fig. 11.) 
Proc. Cal. Acad. Sci., vol. 3, p. 183. 
British Columbia to the Santa Barbara Islands, California. 
