EXPLANATION OF PLATE XXXVIILI. 
NAUTILUS DEKAYI Morton (p. 243). 
FIGs. 1. View of a small specimen from Marlboro, New J ersey. 
2,3. Lateral 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. 
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