vine: fossil polyzoa : additions to the cretaceous lists. 159 
Umbrellina paucipora, Vine. Proc. Yorksh. Geol. Soc, vol. xi., p. 270. 
Osculipora plebea, Novak ,, 
In the Catalogue of the Museum of Practical Geology, 1878, 
the following are recorded from the Lower Chalk. One species, 
Spinopom Dixoni, Lonsdale, is present also in the Upper Chalk of 
Chatham, but I do not include this species in the Polyzoan Group: — 
Membranipora (Flustra sp. ?) fragilis, d'Orb. (See Museum Cata- 
logue, p. 83.) 
§ IV. POLYZOA FROM THE CHALK MARL. 
The species now to be described are from the Chalk Marl 
derived chiefly from the Marl Bed which overlies the Red Chalk of 
Hunstanton. Most of the fossils encrusted by Polyzoan remains were 
submitted to Mr. Jukes-Browne for examination, who kindly handed 
them over to Mr. William Hill for special localisation if possible 
After pointing out the difficulty of doing as I wished without 
sectioning the fossils, Mr. Hill says, "I think you may take it that 
all come from the Chalk at an horizon not higher than the Totten 
hoe Stone." 
This very peculiar horizon is well shown in the diagram sections 
which accompany the very elaborate paper on the Lower Beds of 
the Upper Cretaceous Series in Lincolnshire and Yorkshire," by Mr. 
William Hill, F.G.S, Quart. Journ. Geol. Soc, vol. xliv., pp. 320- 
366, 1888. 
I. Stomatopora pedicellata, Marsson, pi. VI., fig. 2. 
Die Bryoz. der Weissen Schreibk. der Insul Riigen, p. 14, pi. 1, 
fig. 1. 
Encrusting several Echinoderms is a very delicate Stomatopora 
with long and slender Zooecia, which closely resembles the S. pedicel- 
lata, Marsson. I have in my cabinet a species from the Upper Chalk 
encrusting Micraster cor-anguinum, which corresponds more closely 
with Marsson's figure, and the Chalk Marl form differs but slightly 
from it. I place it here provisionally. 
Horizon : Chalk Marl above Red Chalk, Hunstanton, and on 
Holaster sub-globosus, in Mr. Hill's Cabinet. 
