IGO 
vine: notes on bhitish eocene pulyzoa. 
Horizon : Oy.stev beds, Colwell Bay (Prof. Judd) : Biacklesham 
beds, Isle of Wigbt ; London Clay : Walton-on-Thames (C. D. Sher- 
born) ; Higligate. 
Ill examples of tlie above species fi'oiii Colwell Bay, especially 
whenever the sides of the cells are exposed, the delicate communica- 
tion pores, three in number (Rosettenplate), are seen to perfection, 
mucli better preserved and less calcified than in some of the more 
recent specimens in my possession. 
8. Membranipora ? crassa, Desmar. 
Flustra crassa, Desm., of authors. 
I only know the species by a poorly preserved example which I 
should not care to attempt a description of As the species is quoted 
in School of Mines Catalogues it may be well to retain it in the list 
of Eocene Polyzoa. 
Horizon and Locality : Thanet Sands : London Clay, Highgate ; 
(School of Mines collection.) 
4. BiFLUSTRA (Membranipora) Eocena, Busk. 
== Biflustra eocena. Busk, Geol. Mag. vol. iii., p. 3, pi. xii., tig. 2. 
Zoarium irregular, infundibuliform. Zooicia oblong, arched 
above ; septa granular, double : aperture sub-oval or rounded, the 
lower border thickened, granular. 
Horizon and Localitif : London Clay, Highgate. 
Ill a memoir "Les Biyozoaires du Systeme Montien, (Eocene in- 
ferior),"''' the authors describe a very beautiful species under the 
name Biflustra symmetrica, in tlie Zoarium of which the cells are 
much better preserved than in our own. The areas are rather more 
elongated than in B. eocena and the septa well granulate. Not much 
detail can be got from the London Clay example, as, being embedded 
in a mass of Septaria the Zoarium and Zoacia, have suffered in 
consequence. 
5. DiACHORIS INTERMEDIA, Hilicks. 
188L = D. intermedia, Hks., Ann, Mag. Nat. Hist., Aug., 
p. 133. 
1885. D. intermedia, Waters; A.Bell, Brit. Assoc. Hep. p. 195. 
Quoted by Mr. Bell in the Eocene list supplied to me while the 
Report on Recent Polyzoa was passing through the press. 
* A. Meunier and Ed. Pergens Louvain, 1886. 
