JAPANESE MOLLUSKS, ACM^.ID^. Ill 



terniediate specimens between this and typical schrenckii occur. 

 Still another form is smaller, more erect and elevated, with dull, tes- 

 sellated or rayed exterior, and subobsolete radial strite. The speci- 

 mens from Hakodate are rather small. All of the forms of A. 

 schrenckii have the interior stained with green or blue. 

 Acmaea heroldi Dkr. PI. YI, figs. 13, 14, 15, 16, 17, 18. 



Nagasaki and Deshima (Lischke) ; Kashi-azaki, Boshiu, Euo- 

 shima, Sagami (Stearns). 



Great numbers of this species were obtained by Mr. Stearns. It 

 is readily distinguishable from all forms of A. schrenckii by the 

 brown-black and white (not blue or green) interior. Bunker's P. 

 pygmcea is probably a synonym. 



A white variety, ray-variegated with reddish-brown, occurs at 

 Tokyo Harbor and Kamakura (Stearns). 

 Acmaea conulus Dkr. Man. Conch., XIII, p]. 9, f. 17, IS. 



Yokohama, Enoshima, Tokyo Harbor (Stearns); Deshima 

 (Nuhn) ; Nagasaki (Lischke). 



Typical specimens agreeing with the figures cited were collected 

 by Mr. Stearns. 



Acmaea dorsuosa Gould. Man. Conch., XIII, p. 45, pi. 33, f. 88; pi. 9, f. 15, 16. 



Hakodate (Gould) ; Ooshima (Challenger) ; Enoshima (Stearns). 

 Acmaea saccharina Linne. Man. Conch., XIII, pi. 36, f. 60-04. 



Coast of Kii (Stearns) ; Ooshima (Challenger) ; Nagasaki 

 (Lischke) ; Deshima (Nuhn). 



Many specimens were collected, agreeing in the main with Keeve's 

 Patella lanx. The inside has a wide black margin, interrupted at 

 the positions of the principal ribs with white. Spatula is either 

 stained irregularly with brown, or has a large black patch and 

 numerous dots, somewhat as in the var. sfellaris Q. & G. 

 Acmaea grata Gould. Otia Conoh., p. 115. 



North shores of Nippon (N. P. Exped.), 



Acmcea patina Esch., digitalis Esch. and testudinalis Miill., have 

 been reported from Japan, see Jap. Meeres-Conch., II, p. 93, etc. 



LEPETID.a:. 

 Lepeta caeca MUller. Pils., Man. Conch., XIII, p. 68, pi. 40, f. 29-32. 



Northern Japan (Dkr.). 



Lepeta (Cryptobranchia) concentrica Middendorff. Pils., Man Conch XIII p 

 69, pi. 40, f. 33-37. ' 



Northern Japan, Aleutian Is, 



