Figs. 
1. 
EXPLANATION OF PLATE XLVI. 
BACULITES COMPRESSUS (Say) Morton (p. 277). 
Lateral view of the specimen used and figured by Dr. Morton in his synopsis. The dia- 
gram below shows the form of the section. Acad. Nat. Sci., Phila. 
2. Diagram of a septum of the above specimen (2 x).. 
BACULITES OVATUS Say (p. 275) 
3,4. Lateral view of the Mullica Hill specimen in the collection of the Am. Mus. Nat. History, 
5, 6. 
7. 
8,9. 
10. 
11. 
390 
New York, and diagram of the section showing an oval outline. 
Lateral view of a specimen showing an ovate section and diagram of the section. 
Diagram (2 x) of a septum of the specimen Fig. 6, for comparison with Fig. 2. 
View of a small specimen from the Middle Marls, near Tinton Falls, New Jersey, and a 
diagram of its section. 
BACULITES ASPER Morton (p. 278), 
Lateral view of a fragment supposed to belong to this species. 
View of the upper end of the fragment showing the septum in part. 
