28 
VINE : CLASSIFICATION OF THE PALEOZOIC POLYZOA. 
cealed. The families referred to this group are the CeramioporidsG, 
Plilodictyid?e, and Arcaiioporidse."'^' 
Ill my Fourth British Association Report on Fossil Polyzoa, 
1883, I did my best to classify the whole of the then known Fossil 
species up to the chalk. All my ideas were based on the " Cell " and 
its arrangement in the branch, and, with the exception of the following 
which I noAV consider as erroneous, such as placing Cei'iopora inter- 
porosa, C. similis, Phillips, and Hyphasmapom Biiskii, Eth. under 
the Genus Heteropora, I do not thiuk the classification has been as 
yet superceded so far as British species are concerned. 
In the sub-division Cryptostomata, and under the Family name 
Arcanoporidse Vine, " Zoai'iim multiform, Zoo3cia tubular or semi- 
tubular, orifice of cell obscured by vestibule, true orifice of cell 
unknown," 1 placed the following genera : — 
Genus Piilodictt/a, Londsdale. Type P. Lonsdalei, Vine. 
,, Arcanopora, Vine. ,, Flustra ? paralella, Ph. 
,, Glauconome, Goldf. „ G. disticha, Goldf. 
[Note. — My chief reason for shifting the type of Arcanopora 
from Glauconome disticha to Flustra ? parallela was on account of 
the similarity of the " hidden cells," irrespective altogether of the 
character of the interspaces between the cells. The Geological 
Society objected to the destruction of G. disticha as indicated in the 
abstract already given, consequently this species remains the only 
British type of Glauconome.] 
In October, 1882, four months after the abstract of our papers 
was published, nearly ten months after it was written, the first of 
Mr. Ulrich's Papers on American Pakeozoic Bryozoa appeared. This 
and subsequent papers were published in the Journal of the Cincin. 
Soc. of Nat. History. From the first I hailed the publication 
with pleasure, but although I have differed from Mr. Ulrich in his 
estimate as to what are and what are not Bryozoa or Polyzoa, no 
offence on my part was contemplated. In his first paper, p. 151,t 
* Proc. Chester Soc. Nut. Sc., Ph. iii., 1883 ; and Silurian species of Glau- 
conome, &G., by Gr. W. S. and G R. Vine. Abridged, Qiart. Jour. Geol. Soc, 
1884, pp. 329-332. 
t Jour. Gin. Soc. Nat. His., Vol. V. 
