Hab. Monterey, 6-20 fms. 5, alive; Catalina Island, 30-40 fms. 2, alive.
This shell differs from the common Margarita of the Vancouver district (M. pupilla Gld. = calliostoma A. Ad.), in its much deeper and salmon-tinted hue; its finer sculpture, absence of decussation, and want of distant liræ round the umbilicus. From the Norwegian specimens of M. undulata it is known by the absence of sutural waves, and by the finer basal riblets, of which the interstices are minutely sculptured across. The operculum differs from both, in its great thinness and smoothness. Additional specimens may better display its true relations.[10]
Liotia Gray, 1842.
Liotia fenestrata Carp. n. sp. State Collection, Species 1006.
L. t. parvâ, primum subdiscoideâ, postea variante, albido-cinereâ; anfr. nucl. lævibus, planatis, apice depresso; anfr. norm. ii. et dimidio, convexis; clathris validis distantibus circ. xv. radiantibus, et vii. spiralibus, subæquantibus, conspicue fenestratâ; aperturâ circulari, sæpius plus minusve declivi, parieti vix attingente; umbilico maximo, anfractus monstrante; labio, regione umbilicari, sinuato.
Long. 0.09, long. spir. 0.04, lat. 0.12, div. 170°.
Hab. Catalina Island; beach to 40 fms. 20, dead.
This strongly sculptured species varies greatly (in the two specimens sent to the Smithsonian Institution), in the declivity of the mouth and consequent size of the umbilicus, where the labium is, as it were, scooped out.