JE? Ly 8 I Sie OC TL TE IE 
PLACENTICERAS STANTONI var. BOLLI Hyatt. 
(Page 214.) 
Fic. 1. Suture of young specimen enlarged about 23 diameters. 
3 gS} g 2 
2. Part of living chamber and last septa of a large specimen. 
Horton’s mill, Dallas County, Tex.; Taylor beds (?), Upper Cretaceous; Coll. Mus. Comp. Zool., 
Cambridge. 
Gy 
dab 
2 
