EXPLANATION OP PLATE XlV. 



Anchuea abrupta Conrad (p. 113). 



Pigs. 1. View of a largo imperfect cast of tlie form referred to this species. 



2,3. Views of the opposite sides of a second cast, showing the carina ou the back of the volu- 

 tion. Am. Acad. Nat. Sci., Phila. 



Anchuka abrupta var. acutispira Whitf. (p. 114). 



4. View of the specimen described. Acad. Nat. Sci., Phila. 



Alaria rostrata Gabb (p. 119). 



5,6. Views of two diiferent specimens, both showing the onter lip. Fig. 5 is from a Holmdel 

 specimen ; Fig. 6 from Haddonfield, New Jersey, in the Acad. Nat. Sci., Phila. 



Anchura pennata Morton (p. 115). 



7, 8. Views of two casts which show the outer lip. Both from Holmdel, New Jersey. 



Anchura solitaria Whitf. (p. 117). 



9. View of the single imperfect cast observed. 



Anchura arbnaria Morton (p. 112). 



10. View of Dr. Morton's type specimen. Acad. Nat. Sci., Phila. 



ROSTELLARIA Hebb Whitf. (p. 111). 



11-13. Three views of the best cast of the species observed. 

 14. View of another imperfect cast showing spiral lines. 



Anchura pagodafohmis Whitf. (p. 116). 



15, 16. Views of the opposite sides of the best cast of the species yet found. 

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