200 C. F. LASERON. 
Plate VIII. 
Fig. 1. PoLypoRA PERTINAX sp. nov., magnified to 20 diameters; 
portion of the same specimen as in Plate V, fig. 2, showing cell 
apertures. Fig. 2, PoLyporA VIRGA sp. nov., magnified 20 diame- 
ters; portion of the same specimen asin Plate VII, fig. 4, showing 
rod-like cross-bars and cell apertures. 
Plate IX: 
Fig. 1. PoLyporRa TUMULA sp. nov., magnified 20 diameters; 
portion of the same specimen as in Plate VII, fig. 3. Fig. 2. 
Another specimen of the same species, magnified 20 diameters, 
showing the tendency for irregularities of the surface to fuse into 
longitudinal keels. 
Plate X. 
Fig. 1. PoLyPORA PERTINAX sp. nov., portion of the same speci- 
men as in Plate V, fig. 1, magnified to 20 diameters, showing 
the non-celluliferous surface with longitudiual striations. Fig. 2, 
FENESTELLA INTERNATA (?) Lonsdale, portion of the same specimen 
as in Plate XI, fig. 2, magnified to 20 diameters. 
Plate XI. 
Fig. 1. FENESTELLA INTERNATA (?) Lonsdale, magnified 3 diam- 
eters, from the Lower Marine Series at Allandale. Fig. 2, the 
same as in fig. 1, magnified to 20 diameters. 
Plate XII. 
FENESTELLA EXSERTA sp. nov. Fig. 1, portion of the same 
specimen as in Plate VII, fig. 1, enlarged to 20 diameters, show- 
ing nature of the cell apertures, median ridge, etc. Fig. 2, portion 
of the same specimen as in Plate VII, fig. 2, enlarged to 20 
diameters. 
“Plate XITI. 
Fig. 1. FenesTeELLa FossuLA Lonsdale, portion of a colony, 
magnified 3 diameters, from the Upper Marine Series, Branxton. 
Fig. 2, portion of the same specimen enlarged to 20 diameters 
showing the non-celluliferous surface with longitudinal striations. 
