94 JAPANESE MOLLUSKS, TROCHID^, 



Chlorostoma turbinatum A. Adams. PI. VI, figs. 9, 10. 



Pils., Man. Conch., XI. \>. 193, 194. Ch. rugatum Gld., Otia, p. n9<,fide^. A. 

 Smith. 



Toba, S. Niphon (Smith) ; Hakodate Bay and Simoda (Stimp). ; 

 Hakodate (Stearns). 



Shell having the contour of argyrostomum but much smaller, the 

 oblique folds of the upper surface coarser, not splitting below the 

 sutures, often crossed by some indistinct spirals ; base slightly con- 

 vex, with five or six spiral cords, often subobsolete ; columella as in 

 argyrostomum, the umbilical region closed in both old and young, 

 but with a deep pit, encircled on the side toward the mouth by a 

 green callus; the outer margins of the umbilical tract more or less 

 stained with golden. Color above and below, black, in both young 

 and old examples. Alt. 21, diam. 25 mm. The species has not 

 hitherto been figured. 



Chlorostoma nigerrimum Gmelin. Lischke, J. M. C, p. 79, pi. 7, f. 6, 7 ; Pilsbry, 

 Manual XT, p. 1()5. Ch. corrugatum A. Ad. ; Ch. undatellaGld. 



Nagasaki (Lischke) ; Deshima (Nuhn, Dkr.) ; Oushima, Kago- 

 shima and Taneogoshima (Stimpson ; C. undatella Gld., Otia, p. 



158). 



Chlorostoma xanthostigma A.Adams. (mg^ncoZor Dkr.). Dkr., Moll. Jap., j)- 

 22, pi. ?,, f. 2 ; Lischke, J. M. C, p. 100, pi. 7, f. 1, 2. 



Nagasaki (Lischke) ; Deshima (Nuhn, Dkr.) ; Ooshima (St. 

 John). 

 Chlorostoma lischkei Pilsbry. Pilsbry, Man. Conch., XI, j). 167, pi. 20, f. 16. 



Japan (A. Garrett). 



Chlorostoma rusticum Gmelin. Pilsbry, Man. Conch., XI, p. 166, pi. 25, f. 1-4; 

 Lischke. J. M. C. p. 97. 



Nagasaki (Lischke); Deshima (Nuhn, Dkr.); Hakodate (Schrenck 

 and Stearns). 



The upper surface is very strongly rudely ribbed throughout, the 

 ribs extending slightly over the periphery upon the base. Color, 

 black above, black and white strigate beneath, the young black 

 beneath. In the typical rusticum the ribs are less strong. 



Chlorostoma brunneum Phil. Pilsbry, Man. Conch., XI, p. 170, pi. 27, f. 36-.'i8. 



Nagasaki (Lischke). 



A single large si)eciraen (alt. 39, diam. 33 mm.) collected by 

 Stearns, which is undoubtedly this species. 



