98 JAPANESE MOLLU8KS, TROCHID^E. 



Minolia Stearnsii n. sp. 



Shell more depressed than M. vitiliginea Mke., thin, shining, 

 widely umbilicate ; densely and finely radially vermiculate with 

 olivaceous on a pale ground above, usually with few or many radial 

 dark clouds below the suture, and several narrow articulated, spaced 

 spiral lines, the periphery lighter, often spotted ; base with paler 

 vermiculate and articulated pattern. Surface closely and evenly 

 sculptured with spiral striae throughout, with inconspicuous rather 

 spaced oblique impressed lines, and between them very faint, close 

 growth-striae which slightly crenulate the spirals. Whorls 5, very 

 convex, rather flattened below the sutures, producing a blunt median 

 angle on the whorls of the spire. Last whorl subangular at periph- 

 ery and around umbilicus; the latter funnel-shaped, one-fourth the 

 total diameter of the shell, white within and with distinct growth- 

 lines. Aperture roundly subquadrate, oblique; columella slightly 

 dilated above, straight in the middle, bluntly angular at base. Alt. 

 6'2, diam. 10 mm.; var. : olivaceous replaced by brilliant rose color. 



Nemoto, Boshiu (Stearns). I separate this from the vitiliginea of 

 Menke (see Philippi) on account of its more depressed form and 

 wider umbilicus. 



Margarita helioina Fabr. Man. Conch., XI, p. 285 , M. arctica Leach, Dkr., Index, 

 p. 145. 



Has been reported from northern Japan. 



Turcica imperialis A. Adams. Lischke, Jap. Meeres-Conch., Ill, p. 67, pi. 4, f. 4 

 6 ; Pilsbry, Man., p. 415. T. adamsianus Schrenck. 



Tsusaki, W. coast of Japan, 37 fms. (Ad.) ; Bay of Yedo (Lischke); 

 Hakodate (Schrenck) ; Japan (Stearns). 



The largest specimen measures, alt. 38, diam. 31 mm. The color 

 varies from uniform cream-white, to brownish, maculated and light- 

 ning-streaked with reddish-brown. One specimen has the beaded 

 cords of the upper surface reduced to fine, subobsolete, almost smooth 

 threads, the periphery with a double series of compressed beads, and 

 another similar cingulus below the suture. This specimen contrasts 

 strongly with the typical form, but we can only regard it as a 

 variety. 



Turcica concinna A. Adams. Pilsbry, Man. Conch., XI, p. 415. 



Uraga, Japan (Ad.). 



