272 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Shell smooth, whorls six, rather flat, the body-whorl having an obtusely 
angulated periphery; nucleus white and smooth, flat on the top, not swol¬ 
len. (Tryon, Manual of Conchology.) 
Type in British Museum? Type locality, Santa Barbara, California. 
Range. Forrester Island, Alaska, to Gulf of California. 
Columbella tuberosa major T. S. Oldroyd, 1924 
Proceedings of the United States National Museum, 65:24; PI. 2, fig. 11. 
Shell like the typical recent form, with the same number of whorls but 
uniformly much larger. Comparative measurements for specimens of 
eight whorls are: C . tuberosa, length, 8; maximum diameter, 3.8; var. 
major, length, 11; maximum diameter, 5.0 mm. (T. S. Oldroyd.) 
Type in United States National Museum, No. 352369. Type locality, 
Lower San Pedro, Nob Hill cut, San Pedro. 
Range. Banks Island, British Columbia. Fossil: From type locality, 
only. 
Subgenus Alia H. & A. Adams 
Columbella carinata Hinds, 1844 
Zoology of the Voyage of H. M. S. Sulphur, 39; PI. 10, figs 15, 16. 
Testa ovata, acuminata, laevigata, subtenui, fusca, spira nigricante; 
anfractibus subrotundatis, ultimo superne carina obtusa albida cincto, 
subtus coartato; labro inflexa, vix incarassato; apertura nigra. (Hinds.) 
Shell smooth; fulvus encircled by two or three bands of chestnut and 
and white-flecked spots; base of shell and apex of spire stained with choco¬ 
late; inner margin of the outer lip frequently similarly colored. Length, 
7.5-10 mm. (Tryon and Pilsbry, Manual of Conchology.) 
Type locality, San Diego, California. 
Range. San Francisco Bay to Cape San Lucas, Lower California. 
Columbella carinata hindsii (Gaskoin) Reeve, 1858 
Conchologia Iconica, Columbella; fig. 143. 
Shell oblong-ovate, spirally striated, reddish-ash, obscurely filleted with 
dark spots, whorls rather swollen at the upper part; aperture somewhat 
square, denticulated within, effused above and below. (Reeve.) Length, 
7.5-10 mm. (Tryon, Manual of Conchology.) 
Type in Museum Cuming. Type locality, not known. 
Range. Monterey to San Diego, California. 
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