150 vine: fossil polyzoa : ADDITIONS TO THE CRETACEOUS LISTS. 
is now one of the most popular and fascinating of the many palaeon- 
tological specialities. But even now, in spite of the many who are 
engaged in the work, the lists of Upper Cretaceous Polyzoa have 
been added to but little since 1854. Even up to 1885 (Phillips' 
Manual of Geology, pp. 589-590, and Professor Prestwich's Geology, 
1888), the lists of Upper Cretaceous forms are given by the authors 
as 61 or 62 species. In my forthcoming British Association Report- 
on Upper Cretaceous Polyzoa I shall catalogue nearly 130 species 
and varieties found in one locality ; and the end is not yet. 
In this paper I shall describe and illustrate forms, which may 
be considered as additions to the lists of Cretaceous Polyzoa which 
have been already published in the Proceedings of this Society. 
§ I. The Red Chalk of Hunstanton. 
In November, 1891, I received from Mr. Jesson a small box 
containing about thirty specimens of well-preserved Red Chalk fossils, 
some of which were derived from the top bed of the Hunstanton Red 
Chalk. Many of the forms have been previously described in full,* 
whilst other fossils were encrusted by much finer examples of Polyzoa 
than were available for my work at the time I wrote : a few species 
were altogether new. 
I. Stomatopora variabilis, pi. VI., figs. 1 and 1b. 
I have a great objection in creating new specific names for mere 
fragments, but the forms placed here are so well preserved and 
peculiar that I cannot help breaking a rule that must not be too 
strictly kept. The fragment (1a) was adherent to shell (Inoceramus) 
and the two cells measure three-twentyfourths of an inch in length, 
one cell rather larger than the other. The cells of fig. 1a, pi. VI., 
and fig. 1b, vary in their measurement from one-twelfth to one- 
sixteenth of an inch in length. 
Horizon : Examples of fig. 1a Red Chalk, Hunstanton = F gs. 
1 and 1b, from the top beds of Hunstanton Red Chalk. 
* Polyzoa of the Red Chalk, &c. Quart. Journ. Geol. Soc., vol. xlvi., 1890. 
Proc. Yorksh. Geol. Soc, vol. xi., 1890. 
