106 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
Family MURICIDAE. 
Subfamily Muricinae. 
Genus MUREX Linnaeus, 1758. 
Subgenus Alipuspura Bayle, 1884. 
ALIPURPURA RHYSSA Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 56, No. 2295, p. 332. 
Santa Barbara Islands, California, to Ballenas Lagoon, Lower California. 
ALIPURPURA ERINACEOIDES Valenciennes, 1832. 
Humboldt and Bonpland, Voy. Moll., vol. 2, p. 302. 
San Diego, California, to Panama. 
ALIPURPURA TRIALATA Sowerby, 1841. 
Proc. Zool. Soc., p. 143 (not Kiener) ; Conch. 111., Murex, fig. 18. 
Bodega* Bay, California, to Todos Santos Bay, Lower California. 
Subgenus Pteeopurpura Jousseaume, 1880. 
PTEROPURPURA CARPENTERI Dali, 1899. (Plate 13, fig. 5.> 
Nautilus, vol. 12, No. 12, p. 138; Proc. U. S. Nat. Mus., vol. 24, No. 1264, 
pi. 34, fig. 9, 1902. 
Point Conception to San Diego, California. 
PTEROPURPURA CARPENTERI TREMPERI (Hemphill) Dali, 1910. 
Nautilus, vol. 24, No. 8, p. 96; Trans. San Diego Spc. Nat. Hist., vol. 1, 
No. 3, fig. 1, p. 100, 1911. 
Newport Bay and San Pedro, California, in 35 fathoms. 
PTEROPURPURA PETRI Dali, 1900. 
Nautilus, vol. 14, No. 4, p. 37 ; Proc. U. S. Nat. Mus., vol. 24, pi. 34, fig. 7, 
1902. 
Santa Barbara to San Pedro, California. 
Subgenus Triremis Bayle, 1884. - 
TRIREMIS GEMMA Sowerby, 1879. 
Thes. Conch., Murex, p. 32, pi. 22, fig. 214. 
Santa Barbara, California, to Cerros Island, Lower California. 
TRIREMIS SANTAROSANA Dali, 1905. (Plate 13, fig. 3, 4.) 
Nautilus, vol. 19, No. 2, p. 14. 
Santa Barbara Islands, California, to Cerros Island, Lower California. 
TRIREMIS FESTIVA Hinds, 1843. 
Zool. Voy. Sulphur, Moll., p. 9, pi. 3, figs. 13, 14. 
Santa Barbara, California, to Cerros Island, Lower California. 
* Genus PURPURA Martyn, 1784. 
PURPURA FOLIATA Martyn, 1784. 
111. Nondescript Shells, table 2, pi. 66. 
Sitka, Alaska, to San Diego, California. 
