PLATE IX. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4, 
Fig. 5, 
Heteropora michelini (d’Orb.), var. lohata. Upper Greensand 
— Zone of Schlcenhachia rostrata : Haldon. Fig. la, the 
whole zoarium, nat. size ; Fig. 16, part of the surface, x 10 dia. 
Vicary Coll. [D. 7399.] 
Heteropora michelini (d’Orb. ), var. cylindrica. U pper Greensand 
— Zone of Schlcenhachia rostrata : Haldon. Fig. 2a, the 
zoarium from above, nat. size ; Fig. 26, part of the surface, 
X 10 dia. Vicary Coll. [D. 7405.] 
Reptomulticava micropora (Romer). Neocomian — Hilscon- 
glomerat Berklingen, Brunswick. Part of the surface ; 
X 10 dia. Saemann Coll. [D. 3645.] 
Multicrescis tuherosa (Romer). Neocomian — Hilsconglomerat : 
Goslar, Hannover. Fig. 4a, the side view of the zoarium, 
X 3 dia. ; Fig. 46, vertical section through the same 
specimen, x 3 dia. [D. 7075a.] 
Pergensella geniculata (Hag.). Senonian — Maastrichter Kalk : 
Maastricht. An exceptionally well - preserved specimen. 
Fig. 5a, the obverse surface, x 5 dia. ; Fig. 56, side view; of 
the same specimen, x 5 dia. Van Breda Coll. [D. 3526.] 
