Figs. 
332 
EXPLANATION OF PLATE XVII. 
MARGARITA ABYSSINA Gabb (p. 133). 
. Lateral and basal views of a specimen from Burlington, New Jersey. Am. Mus. Nat. Hist. 
New York City. 
. Enlargement to two diameters of the same. 
5. Lateral and summit views of a cast from Crosswicks. 
MopvuLus LapPiposus Whitf. (p. 152). 
. Lateral, basal, and summit views of a very perfect cast. 
DELPHINULA LAPIDOSA Morton’s sp. (p. 152). 
. Enlarged lateral, summit, and basal views of Dr. Morton’s type, from Alabama. Acad. 
Nat. Sci., Phila. 
MARGARITELLA ABBOTTI Gabb (p. 134). 
. Summit and basal views of Mr. Gabb’s type. Acad. Nat. Sci., Phila. 
. Lateral and summit views of another cast. Acad. Nat. Sci., Phila. 
XENOPHORA LEPROSA Morton (p. 135). 
. Summit and basal views of a small cast. 
. Basal and lateral views of a large cast from Crosswicks, New Jersey. 
ENDOPTYGMA UMBILICATA Tuomey (p. 136). 
. Basal view of a small cast showing the groove left by the spiral tooth. Am. Mus. Nat. 
Hist., New York City. The specimen is from Burlington, New Jersey. 
