128 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
spire, with the apex eroded, and the suture linear; the last whorl very 
large, full posteriorly, and somewhat tabular at the suture; the last whorl 
is quite as long as broad, and perhaps attenuated at base. The aperture is 
about two-thirds the length of shell, semilunar; the outer lip sharp, the 
pillar lip straight, heavily and broadly loaded with callus posteriorly, and 
regularly narrowing, and yet nearly covering a small umbilical pit at the 
middle, so as to leave merely a small, linear chink, or none at all. Axial 
diameter, ]/ 2 ; transverse diameter, % in. (Gould.) 
Type in United States National Museum? Type locality, Straits of 
Juan de Fuca. 
Range. Norton Sound, Alaska, to Puget Sound, to San Diego, Cali¬ 
fornia, in 822 fathoms. 
Described as Natica caurina. 
Polinices algida Gould, 1848 
Proceedings of the Boston Society of Natural History, 3:73. Mollusca and Shells of 
the United States Exploring Expedition, fig. 256. 
Testa parva, tenuis, globosa, glabra, albido-livescens: spira atifr. 4 
ventricosis juxta suturam linearem tabulatis, ultimo magno ampullaceo: 
apertura semilunaris; columella arcuata: basis umbilico modico spirali 
funiculato, ad aditum angulato perforata. Long., 5/8; lat., 3/5 poll. 
(Gould.) 
Shell small, rather thin, globular, smooth, of a pale bluish-white color. 
Whorls four, forming a rounded, slightly elevated spire, the last one very 
capacious, with a narrow shoulder near the suture. Aperture semilunar, 
outer lip thin; inner margin curved, covered posteriorly by callus, which 
is not very closely appressed. There is a rather large, open, somewhat 
spiral umbilical opening, externally margined by an angle, and partially 
filled by a revolving pillar, on which is an expansion of the callus. (Gould.) 
Type in ? Type locality, Classet, Oregon. 
Range. Coal Harbor, Shumagin Islands, Alaska, to Puget Sound, 
Washington. 
Described as Natica algida. 
Polinices draconis Dali, 1903 
Plate 99, figs. 3, 6 
Proceedings of the Biological Society of Washington, 16:174. Bulletin 112, United 
States National Museum, PI. 14, figs. 4, 6. 
Shell depressed, solid, cream color, sometimes with a ferruginous or 
livid tinge, with six whorls; nuclear whorls very small, smooth; later ones 
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