82 - A-rt. 1.— M, Yokoyama : 



Fossil occurrence. — Shito. 

 Living. — Centra] Japan. 



Family Capulidae. 



Genus CAPUI-US, Montfort. 



107. Capulus hadius, Dunker. 



PL IV. Fig. 9. 



■Gapulas badins. Duuker, Iudex Moll, p. 124, pi. XIII, figs. 15-17. Pilsbry, Catalogue, 

 p. 69. Tryon, Man. Conch., vol. VIII, p. 132, pi. 39, tigs. 77, 78. 



A single specimen. 



The thick capuliform shell is laterally somewhat compressed 

 -with the spirally coiled vertex extending beyond the anterior mar- 

 gin of the aperture. The position of the vertex is not quite in the 

 median line of the shell owing to a distortion by pressure. Surface 

 radiately costellate. Aperture ovate and posteriorly dilated. 



Fossil occurrence. — Kamenari. 



Living. — Western Japan. 



Genus CArYI»TR.T:A, Lamarck. 



108. Calyptrœa tnuiiitnilaris, (Broderip). 



Oalyptnea mammilaris. Tryon, Man. Conch., VIII, p. 120, pi. 34, figs. 64-75, 78-81. 



Yokoyama, Foss. Minra Penin., p. 75, pi. IV, fig. 5. 

 Trochita mammilaris. Sowerby, Thes. Conch., V, p. 65, pi. 450, figs. 69-71. 



Many examples, but all below JO millim. in diameter. 

 Fossil occurrence. — Shito. Low^er Musashino of Miyata. 

 Living. — West Coast of America from Puget Sound down to 

 the Strait of Magellan. 



Genus CREPIDULA, Lamarck. 



lO!). Crepiilula ffrantJis, Middendorff. 

 PI. IV. Fig. 10. 



■Cre})idida (jmiuUs. Midtlendorfï, Beitr. zu einer Malak. Ross., II, p. 101, pi. XI, figs. 8- 

 10. Schrenck, Moll. Amurl. u. d. nordjap. Meeres, p. 382. Danker, Ind. Mo^ ' , . 

 123, pi. VI, figs. 1, 2. Pilsbry, Catalogue, p. 70. 



