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 Fig. 9. Turris minor 3b4 



9, a. A specimen, natural size. 

 9, b. The same, maguified. 



9, c. An aperture view, natural size. 



Pig. 10. P yropsis Bairdi 369 



10, a. A dorsal view of the nearly perfect type-specimen. 



10, b. An aperture view of same. 



Fig. 1 0, c. Pyropsis Bairdi, var. rotula :s? 1 



A dorsal view of a specimen with the heak broken away. [For an aperture view see cut 

 in text.l 

 Fig. 11 . Fasciolaria (Piestochiltjs) cretacea 3G3 



11, a. An aperture view of the type-specimen, natural size. 



11, b. The same, magnified, with the outer lip broken. [Plaits of columella too much crowded 

 and not quite oblique enough.] 



Fig. 11, d. Fusus (Serrifcsus) Dakotensis 374 



An imperfect internal cast of a small specimen (see middle of plate). 



31-2 



