194 
channeled. Periphery of the last whorl marked by a broad sul- 
cus, equalling that which separates the supraperipherai from the 
median cord, crossed by the continuations of the axial ribs. Base 
marked by a strong, broad, rounded cord immediately below the 
periphery and a 2d less strong on its middle, while a slender 
thread encircles the insertion of the columella. In addition to 
this sculpture, the base is marked by strong, incremental lines. 
Aperture irregularly oval, decidedly channeled anteriorly; pos- 
terior angle obtuse; outer lip thin, showing the external sculp- 
ture within, rendered sinuous at the edge by the external sculp- 
tur; columella stout, curved, strongly twisted, with the edge re- 
flected; parietal wall glazed with a thick callus.”’ 
Type locality:—off Del Monte, Monterey, Cal., in 12 fms. (S. 
S. Berry). 
Also known from San Pedro bay, Cal. 
2991 Cerithiopsis (Cerithiopsis) cesta 
Type locality:—San Diego, Cal. 
2992 C. (C.) Stejnegeri 
Type locality:—Bering Island. 
2993 Variety dina. Sitka, Alaska. 
2994 C. (C.) halia 
_ Type locality:—Todos Santos bay, Baja Cal. 
2995 C. (C.) aurea 
2996 C. necropolitana 
Lower San Pedro series, Deadmans Island, Cal. 
2997 C. diegensis 
Type locality:—-San Diego, Cal. 
2998 Cerithiopsis (Cerithiopsida) Rowelli 
Probably Californian. 
2999 Cerithiopsis (Cerithiopsidella) antefilosa 
Type locality:—off Point Loma, Cal.—San Pedro bay, Cal. 
3000 Cerithiopsis (C.) alcima 
Type locality:—-Whites Point, San Pedro, Cal. 
5001 Cerithiopsis excelsa 
Oregonian Eocene of North Fork of Umpqua river. 
2003 Cerithiopsis fossilis 
Lower San Pedro series, Deadmans Island, Cal. 
3003 Cerithiopsis gloriosa 
California. 
3004 Cerithiopsis columna Cpr. 
Type locality:—Neah bay, Washington (J. G. Swan).—Mon- 
terey, Cal. 
3005 = Cerithiopsis paramcea 
Type locality: —Neah bay, Washington. 
3006 Cerithiopsis Arnoldi 
Type locality:—-San Pedro bay, Cal. (Ralph Arnold). 
3007 Cerithiopsis antemunda 
Type locality:—-San Pedro bay, Cal.—San Diego, Cal. 
3008 Cerithiopsis diomedez 
Type locality:—San Diego, Cal. 
3009 Cerithiopsis Williamsoni 
Synonymy:—Bittium williamsoni Arnold. 
Type locality: Pleistocene of San Pedro, Cal. 
3010 Cerithiopsis truncata Dall. 
Type locality: —Unalaska, in the canals of sponges. 
3011 Cerithiopsis stephens 
Type locality:—-Bear bay, Peril Strait, Baranoff Island, Alas- 
ka (Mrs. Kate Stephens).—Puget Sound, Washington. 
3012 C: Montereyensis. Monterey bay, Cal. 
