PLATE 3 2. 



Page. 



Fig. 1. Fasciolaria (Piestochilus), Culbertsoni ;iGo 



I, a. An imperfect specimen, with the surface-folds well developed (type.) 

 1, 6, An opposite view of another broken specimen, retaining most of the beak, but not show- 

 ing the plaits of the columella. [See wood-cut in text.] 

 1, c. A different view of last. 

 1, (L A large specimen, with the surface-folds only developed on the upper volutions. 



I, (. An aperture view of same, not showing plaits of columella. 

 1,/. Surface-markings magnified. 



Fig. 2. Fasciolaria (Piestochilus) Galpiniana 3Gi> 



'J,. i. An aperture view of the type-specimen, showing the more curved canal, as compared 



with iigs. 1, 6, and 1, e, of the foregoing species. 

 2,6. A dorsal view of same. 



Fig. 3. Pyrifusus (Neptunella) stjbtukiutus 347 



3, a. The broken type-specimen. 



:i, 6. An opposite side-view of same. 

 Fig. -1. Fasciolaria (Piestochilus) Scarboroughi 359 



4, a. A dorsal view of the type-specimen, with the end of its beak brokeu. 



4, 6. An aperture view of another specimen, not showing the plaits of the columella. 



4, <. An opposite view of a shorter specimen. 



I,J. A broken specimen, showing the plaits on the columella above the aperture. 

 Fig. 5. Cantiiarus (Cantharulus) Vaughani 379 



5, o. The type-specimen, with the end of the beak a little broken. [See also wood-cut in test.] 



5, 6. An aperture view of the same, the aperture being a little narrowed by accidental com- 



pression. 



Fig. 0. Fusus (Skrrifusus) Dakotensis 374 



(l,d. Dorsal view of the imperfect type-specimen. 



6, h. A11 opposite view of same. 



(i, c. Surface-markings magnified. 

 Fig. 7. Fusus (Serrifusus) Dakotensis, var 375 



7, a. An imperfect specimen, showing the more compressed angular character of the principal 



row of nodes in this variety or species. 



7, b. A smaller imperfect cast of same. 



Fig. y. Anchura (Drepanochilus) Americana 325 



8, a. An aperture view of a specimen, with the beak broken away. [The furrow of the inner 



side of tho extended lip should be along its middle.] 

 8,6. Au opposite view of the perfect type-specimen. 

 Fig. 9. Spironema TENIIilineata * 342 



9, a. An aperture' view of the entire type-specimen. 

 '.I, b. An opposite view of same. 



9, e. Surface-markings of same, magnified. 



in.. 10. Chkmnitzia ceritiiifohmis 339 



10, a. An aperture view of the ut arly perfect type-specimen. 

 10,6. Au opposite view of same. 



FltS. 11. L IN ATI A CONCINNA 31 I 



ll.ii. Dorsal view, natural size. 



11,6. Au aperture view of same. [Inner lip too straight, and not quite thick enough near 

 umbilicus.] 



II, c. Surfaco-strias, magnified. 



Fig. 12. Lunatia occidentalis 315 



12,n. Dorsal view, natural size, (type-specimen.) 



12, 6. \n apei t iiic \ nw of same. [Inner lip too thick, and not reflected enough at umbilicus.] 



12, c. Snrfacc-stria;, magnified. 



