EXPLANATION OF PLATE XXXVIL 



Nautilus Dbkayi Morton (p. 243). 



Figs. 1. View of a small specimen from Marlboro, New Jersey. 



2,3. Later.al and back view of the specimen figured by Dr. Morton. Acad. Nat. Sciences, 

 Philadelphia. 

 4. View of another specimen from the Academy's collection. 

 5, 6. Two views of a specimen loaned by G. F. Kunz, obtained near Hillsboro, New Jersey, 

 378 



