EXPLANATION OF PLATE V. 



PyRIFUSUS TURRITUS Whitf. (p. 54). 



Figs. 1, 2. Two view3 of an imperfect ca8t from Middletown, New Jersey. 



3. View of a cast from Burlington, New Jersey. Acad. Nat. Sci., Phila. 

 4, 5. Two views of a more perfect cast from Crosswioks Creek, New Jersey. Acad. Nat. Sci., 

 Phila. 



Triton (Epidromus) pr^ckdens Whitf. (p. 58). 



6, 7. Two views of the specimen described. 



Trachytriton Atlanticum Whitf. (p. 59). 



8, 9. Front and back views of a very perfect oast, showing the varices. 

 10, 11. Views of two other casts, differing in size. 



Trachytriton moltivaeicosum Whitf. (p. 61). 



12, 13. Views of two imperfect oasts showing spiral lines. 



14, 15. Two views of a specimen showing varices, but not the spiral lines. 



Trachytriton ? Holmdelense Whitf. (p. 60). 



16, 17. Two views of the specimen described, doubtfully a Trachytriton. 



Odontofusus medians Whitf. (p. 67). 



18-21. Opposite views of each of two individuals of this species showing variation in form. 



Serrifusus (Lirofusus) nodocarinatus Whitf. (p. 64). 



23,23. Two views of the cast showing the features described. 



Serrifusus Crosswickensis Whitf. (p. 63). 



24, 25. Opposite views of the cast showing the features described. 

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