Te AAD I, OK ONE IES 
PLACENTICERAS INTERCALARE Meek. 
(Page 207.) 
Fic. 1. Opposite side of specimen figured on Pl, XXXY. 
2, 3. Side and aperture views of small specimen, No. 2104b. 
4. Suture of same, * 2. ! 
5. Parts of two septa of Geological Survey specimen from Harper, Wyo., represented by 
Pl XOXGXVIL, figs: 1; 2 
Fort Pierre, Upper Cretaceous, Coll. Yale University (except fig. 5). 
324 
