TLATE XX XT. 



Page. ] 

 AroRRiTAis (GONIOCHEILA) castorensis Whitfield 143 



Fig. 1. Dorsal view of the type (after Whitfield). 



Aporrhais (PerissopteRa?) prolabiata White 144 



Fig. 2. Dorsal view of a large specimen with portions of the beak and wing 

 restored from two specimens. The restoration of the beak is per- 

 haps somewhat too long. 



Nat. Mus. Cat. Invert. Foss., 22917. 



Anchura (Drepanocheilus) ruida White 115 



Fig. 3, 4. Opposite views of the type (after White). 



LlSPODESTHES NUPTIALIS White J 17 



Fig. 5. Dorsal view of small specimen, the type of Lisposdesthes lingulifera, 

 enlarged (after White). 

 6. Dorsal view of the type of the species, enlarged (after White). 



PUGNELLUS FUSIFORMIS Meek 148 



Nat. Mns. Cat. Invert. Foss., 22018. 

 Fig. 7. Dorsal view of an adult specimen, showing the very heavy callus- 

 covering the spire and with the costae of the body volution short- 

 ened into round nodes. 



8. Dorsal view of a large specimen of the usual form. The tip of the 



wing-like projection of the outer lip is broken off. 



9. Aperture view of a medium sized specimen. The thinner portions 



of the callus covering the spire have been exfoliated. 



10. Aperture view of an immature specimen on which the callus has not 



yet developed. 



11. Dorsal view of a still younger individual showing the character of 



the outer lip at this stage of growth. 



Tritonium kanabense n. sp 150 



Fig. 12. Dorsal view of the imperfect type specimen. 

 Nat. Mus. Cat. Invert. Foss., 22919. 

 FUSUS SHUMAllDI H. &, M. ? 150 



Fig. 13. Dorsal view (after Whitfield). 

 Frsus gabbi Meek 151 



Fig. 14. Aperture view of Meek's type (after White). 



TRITON1DEA ? HUERFANENSIS n. Sp 152 



15. Dorsal view of the type. 



Nat. Mus. Cat. Invert. Foss., 22920. 



254 



