784 G. R. VINE ON POLYZOA (BRYOZOA) FOUND IN 
51. Poztyzoa (Bryozoa) found im the Bortne at Riceuonp, SURREY 
referred to by Pror. Jupp, F.R.S. By Grorer Rosertr Vine, 
Esq. Communicated by Prof. Jupp, F.R.S., Sec. G.S. (Read 
June 25, 1884.) 
Tux following notes are essentially the same as those originally 
supplied to Prof. Judd under the circumstances mentioned in his 
paper. With his permission I have extended my remarks, not for 
the purpose of correcting previous identifications, but because fresh 
materials have been placed at my disposal. These, I found, merited 
a closer comparative study than I had given to the series, and in 
preparing my observations for publication it was necessary to bring 
the results of my investigations up to the level, as far as was pos- 
sible, of the paleontological work of the present day. 
Many of the forms may be considered identical with those 
described by Jules Haime* and Prof. Brauns+; and I was inclined 
to place certain species under the names, and to accept the syno- 
nyms, of these authors. A reference, however, to the writings of 
Haime and Braun compelled me to reconsider my vaguely formed 
intention, after which I reworked the whole of the species and 
varieties found in the Richmond series—one of the most important 
local series that has ever been brought under my notice. Of course, 
in my mode of working I may appear to differ from Jules Haime 
in appreciation of certain forms. This is not the fact; for I feel 
convinced that this careful paleontologist must have had many 
mental forebodings before he arrived at some of his conclusions. 
This is especially apparent in his dealing with the Spzropora group, 
and also with the genus Tercbellaria. In working up these groups— 
and here the value of the boring-washing is immediately apparent— 
I have endeavoured to settle, or at least simplify, many moot points. 
If any doubt about this should exist in the mind of the palzon- 
tologist after reading these notes, I refer him to the paper of F. D. 
Longe, F.G.S., ‘‘ On the Relation of the Escharoid Forms of Oolitic 
Polyzoa to the Cheilostomata and Cyclostomata” +t. In this special 
paper he will find, in spite of a splendid collection of Polyzoa from 
the Lower Oolite of Cheltenham, how difficult the specific study of 
forms has been to areally painstaking student. The reason is plain. 
In the whole of the Jurassic formation we have varieties of forms 
related, but not closely so, to forms now placed with the Chilosto- 
matous Polyzoa. These, however, are not members of that group, 
though they may be considered in the light of relationship if 
external cell-structure is the only consideration on the part of the 
student. There are, however, strong reasons for believing that the 
“evolutionary beginnings” (if I may be allowed to express myself 
* ‘ Bryozoaires foss. de la formation Jurassique”” in Mém. Soc. Géol. France, 
sér. 2, tome v. pp. 157-218 (1854). 
t ‘“ Die Bryozoen des mittleren Jura der Gegend von Metz,” in Zeitschr. d. 
deutsch. geol. Ges. Bd. xxxi. pp. 308-338 (1879). 
¢ Geol. Magazine, Jan. 1881. 
