Grabau. — Moniloporidae. 
PLATE 1. 
Fig. 1. Ceratopora jacksoni. Type, nat. size.— A bud, extending away from 
the plane of the paper, is not shown. Hamilton shales, Eighteen Mile 
Creek, Erie Co., N. Y. Author’s coll. 
Figs. 2, 3. Monilopora beecheri. Opposite sides of a specimen in the collection 
of Yale university museum growing upon the stem of a Platycrinus. 
Calices project in all directions. Nat. size. 
