PLATE XL 



FIG. 1. Heteropora conifera (Lamx.). Inferior Oolite. LOG. ? Zooscia 

 and mesopores, x 22 dia. Holl Coll. [B. 4881.] 



FIG. 2. Heteropora laminata, Greg. Inferior Oolite : Dorset ? Zorecia 

 and mesopores, x 22 dia. [B. 2300.] 



FIG. 3. Heteropora laminata, Greg. Inferior Oolite : Dorset ? 

 Surface of part of zoarium, x 18 dia. ; transverse section, 

 x 13 dia. [D. 2255.] 



FIG. 4. Heteropora oviformis, Greg. Bradford Clay : Bradford, 

 x 16 dia. [D. 2176.] 



FIG. 5. Ceriopora globosa, Mich. Great Oolite : Hampton Down, 

 x 22 dia. [B. 4248.] 



FIG. 6. Ceriopora arborescens, Waagen. Inferior Oolite. Loc. ? Part 

 of massive, thick-branched zoarium, x 16 dia. [B. 2286.] 



