PLATE IX. 



FIG. 1. Spiropora tetragona, Lamx. Inferior Oolite. LOG. ? Part 

 of branch, x 8 dia. Presented by F. Harford, Esq. 



[B. 3829.] 



FIG. 2. Spiropora richmondiensis, Vine. Great Oolite : Richmond 

 boring. Vine's type. Presented by Prof. J. W. Judd, 

 C.B., F.RS. x 17 dia. [D. 1935.] 



FIG. 3. Haplocecia irregulare, Gregory. Lincolnshire Limestone : 

 Stamford, x 24 dia. S. Sharpe Coll. [D. 44.] 



FIG. 4. Apsendesia cristata, Lamx. Forest Marble : Wiltshire. 

 Part of zoarium, x 6 dia., showing the Fasciculiporoid 

 shape of the tufts, and their serial arrangement. 

 Cunnington Coll. [24770.] 



FIG. 5. Apsendesia cristata, Lamx. Great Oolite : Burford, Wilt- 

 shire. Young zoarium in the Defrancia stage, x 5 dia. 



[38596.] 



FIG. 6. Actinopora diplopora, Brauns. Great Oolite : near Bath ? 

 Part of a zoarium, x 12 dia. ; and the whole zoarium 

 nat. size. [B. 2295.] 



