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Fig. 13. r \soiolaria (Ciivrioitiiviis) Cheyenjnknsis 300 



iS, a. Am imperfect specimen, consisting mainly of a cast of the interior. 



13, b. An opposite view of same. [After the original typical figures. | 



Fig. 14. Pykifusus (Neptunella) intertextus 348 



14, a. An aperture view of the type-specimen, witli its beak broken away. 



14, b. An opposite view of the same. 



Fill. 15. AMAUROPSIS PALTJDINIFORMIS 31H 



15,0. A specimen, with a part of the shell exfoliated. 



15, 6. An aperture view of same. [Inner lip hidden by the rock filling the aperture.] 

 15, c. Surface-markings magnified. 



Fid. If). AcTvEOX SUBELLIPTICGS 280 



A specimen, magnified two and a half diameters, with the lip broken so as to give too 

 angular an appearance to the base of the aperture (type-specimen). 



Fig. 17. AlT.EOX ATTEXUATA 281 



17, a. A dorsal view of the shell, natural size (type-specimen). 

 17, b. Surface-markings, magnified. 



19-2 



