454 Mii. G. R. VINE ON THE POLYZOA 01' 



28. A Monograph of the Polyzoa (Bryozoa) of the Eed Chalk of 

 Htjnstanton. J3y George Eobert Vine, Esq. (Head March 

 2Q, 1890.) 



(Coiamunicated by Prof. P. M. Duncan, F.R.S. kv.) 

 [Plate XIX.] 



Contexts. 

 I. lutrocluctiou. 

 II. Bibliographic Notices: 1. Paljisoutological. 



1*. Paunal References. 

 2, Stratification, Horizons, &c. 

 III. Known Ranges of Polyzoa in the Red Chalk. 

 IV. Description of Species. 



§ I. Oyclostomata, Busk. 



A. Parallelata, Waters. 

 Genus Stoiuatopora, Bronn. 



Proboscina, Audouin. 

 Diastopora, Lamouroux. 

 Unitubigei-a, cVOrb. 

 Entalophora ?, Lamx. 

 Heteropora, Blainv. 



B. Rectangulata, Waters. 

 Genus Ceriopora, Goldfuss. 



Reptoniulticava, d'Orb. 

 Zouopora, d'Orb. 

 Multicrescis, d^Orb. 

 Unicavea, d'Orb. 

 §11. Cheilostomata, Bush. 

 Genus Membranipora, Blainville. 

 Hippothoa, d'Orb. 

 Explanation of Plate XIX. 



I. Introduction. 



It is not my intention in this monograph to discuss any of the 

 stratigraphieal questions raised by authors who have written about 

 the Pted Chalk of Hunstanton. I have to deal with one group of 

 fossils only ; but, before entering on my investigations, it a\ as 

 necessary to make myself familiar with the views of others, and 

 more especially with the pala^ontological evidence afforded by the study 

 of the fossils from the various zones of the Chalk. One source of 

 information has been, however, more helpful to me than all the 

 others. When compiling material for my British-Association 

 Reports on Fossil Polyzoa*, I was allowed to examine all the type 

 series in the Museum of Practical Geology, from the Cambrian to 

 the Upper Chalk; and recently (September 1889) I have re-examined, 

 for the purpose of this and another i)aper on the Polyzoa of the 

 Upper and the Lower Greensands (Bibliographic List, 21 ; sec 

 page 458), all the Cretaceous forms mentioned in the Catalogue of 

 that Museum (Bibliogr. 12). Besides the examination of these forms 

 Mr. Alfred Bell has placed in my hand for study and description a 

 tine series of Polyzoa preserved oji flints, as well as free examples, 



* Brit. Assoc. Reports, 1880-1885. 



