VIXE: CAMBEIDGE GREENSAND. 
15 
punctured (?) Ooecium an inflation of the Zoarium, or an inflated cell. 
Range of variation. — The range of variation of this species may 
be estimated if reference be made either to the synonymy of Novak, 
or to that of Mr. A. W. Waters. There is, however, a great 
difference in the list of the two authors, and I have reproduced only 
those names that I could verify in British Cretaceous rocks after the 
full reference given from D'Orbigny. The Greensand form differs 
from specimens of what we may reasonably consider the same species 
in the Upper Chalk, but I am not able to verify the whole of Novak's 
references. The Pustulo'pora inistica^ and F. nana Hagenow in my 
Faxoe Limestone material are altogether different from those of the 
British Cretaceous, E. raripora. 
Localities : Cambridge, Greensand fairly abundant ; Chalk detritus 
Kent ; Faxoe Limestone Denmark ; Palaski Co. Arkansas (Cretaceous 
Rocks, America.) All in my own cabinet. Mr. Waters gives a 
long list of localities European and Austrahan. 
4.— Entalophoea Jessonii, sp. nov. Plate L, fig. 6. 
Zoarium cyclindrical (normal), occasionally flattened by com- 
pression ; branches variable — in young specimens rarely exceeding 
two millimetres in breadth, thicker and moie bulky in older 
specimens — bifurcating, but thick immediately beneath the separation. 
Zocecia irregular, or disposed in spirals, orifice circular, or slightly 
oval, peristome thick ; cells tubular, stunted, or elongated, occasionally 
bordered by divisional, hexagonal lines in older specimens. 
Range of variation. — The occasional bordering of the cells by 
divisional lines gives to older and worn specimens of this species a 
peculiar Escliariform character, but the range of variation is more 
noticable in the older, than in the younger forms. This, and the 
next species are very characteristic of the Cambridge material. 
Locality: Cambridge, Greensand. 
5. — Entalophoea steiatopoea, sp. nov. Plate I., fig. 5. 
Zoarium originating from a broad disk-like base, branches 
bifurcating or irregularly disposed. Zocecia tubular, distal extremity 
produced, proximal, generally immersed ; the whole of the intervening 
space between the cells covered with longitudinal or zigzag strife. 
Orifice circular, peristome thick and prominent. 
