18 
VINE : CAMBRIDGE GREENSAND. 
Fig. 3. Entalophora gigantopoia, Vine — an ordinary but char- 
acteristic specimen. 
Fig. 4. neocominensis, D'Orb. (now separated from 
E. Jessoni.) 
Eig. 5. „ striatopora, Vine. 
Fig. 6. Jessoni, Vine. 
8. — DiASTOPORA CRETACEA, Vine. 
Diastopora cretacea (n. sp ?) Vine, Brit. Assoc. Report, Fossil 
Polyzoa, 1883. 
Zoarium adherent, with a nearly circular outline, depressed in 
the central part, very much thickened at the edges by stunted 
(partially grown) cells, but without basal lamina. Zomia irregularly 
arranged, contracted towards the proximal and thickened at the 
distal extremities, separated by interspaces ; orifice circular with a 
thickened peristone. Ocecia an inflated cell. 
Localities : Cambridge, Greensand ; Upper Chalk, Sussex (Miss 
E. C. Jelly.) 
This species is represented in Mr. Jesson's collection by a 
single example, and this seems to have been derived from the 
Cretaceous rocks above. The specimen is rather more water-worn 
than ordinary examples of Polyzoa from the Cambridge Greensand 
horizon. 
9. — Diastopora cretacea. Vine. Var. lineata var. nov., PI. 2, 
fig. 8. 
Zoarium adnate, with a circular or semi-circular outline. 
Zocecia linear, but rarely more than three or four in the series, the 
last cell originating a new lineal departure until the edge of the 
Zoarium is reached ; primary cells irregular, central. Omda ? 
Locality: Cambridge, Greensand. 
10. — Diastopora fecund a (sp. nov.) 
Zoarium variable, either flat and circular, or dome shape, 
proliferous ; basal colony, or disk about eight or nine millemetres in 
diameter, overlaid by another colony rather less in diameter, and 
then by others still decreasing in size. Zocecia variable, elongated 
but raiel}' exposed, except at the distal extremity of the cell ; orifice 
circular (normal), or slightly elongated (worn), peristome thin, not 
