CLASS GASTROPODA 
123 
Natica janthostoma Deshayes, 1841 
Plate 97, fig. 5 
Guerin, Magasin dc Zoologie, Mollusca. 
Testa globulosa, rufa, albido-zonata, apice nigrescente, levigata; anfrac- 
tibus convexis, ultimo umbilico, clauso callo semi-circulari; apertura ovata 
semi-lunari, intus violacea, ad margines alba, operculo calcareo albo, sim- 
plici clausa. (Deshayes.) 
Shell globulous, reddish, zoned with white; apex darkened, smoothish; 
convex whorls, the last one umbilicate, closed with a semicircular callus; 
aperture ovate, semilunar, within violet, toward the margins white, closed 
with plain white calcareous operculum. (Translation.) 
Type in Museum, Paris. Type locality, Kamchatka. 
Range. Commander Islands, Bering Sea; Kamchatka and south to 
Japan. 
Natica russa Gould, 1859 
Proceedings of the Boston Society of Natural History, 7:43. 
T. imperforata, ovato-globosa, tenuis, laevis, epidermicle tenui cerina 
induta; anfr. 4 ventricosis postice quadratis. Apertura ovata, subeffusa, 
labro tenui, umbilico callo compresso albo obstructo. Operculum osseum. 
Axis, 18; diameter, 16 mm. (Gould.) 
Shell imperforate, ovate-globose, thin, smooth, covered with a thin 
waxy epidermis; four whorls, ventricose and quadrate behind. Aperture 
ovate, subeffuse with thin outer lip, umbilicus obstructed with compressed 
white callus. Operculum osseous. (Translation.) 
Type in ? Type locality, Arctic Ocean. 
Range. Bering Strait to Forrester Island, Alaska. 
Natica salimba Dali, 1919 
Proceedings of the United States National Museum, 56:351. 
Shell small, smooth, except for faint incremental lines, yellowish-white 
with a faintly darker band in front of the suture and another between the 
periphery and the base; with four evenly rounded whorls slightly flat¬ 
tened in front of a somewhat appressed suture; base rounded, the um¬ 
bilicus closed by a semilunar convex mass of callus not notched above; 
the aperture lunate, outer lip thin, the body callus, the pillar lip somewhat 
thickened; the operculum is white, porcellanous, of about two whorls. 
Height of shell, 14; of aperture, 10; diameter, 13.5 mm. (Dali.) 
Type in United States National Museum, No. 209295. Type locality, 
[ 725 | 
