267 
On the Bryozoa of the Bay of Naples. 
British Museum labelled u Jamaica ” there may be an error. 
The two specimens with thirty-one pairs may be from the 
mainland and be P. Edwardsii. The other may be a true 
Jamaica species. 
The following questions arise :— 
Is there a St.-Thomas species with twenty-eight pairs of 
feet? 
A Jamaica species with thirty-seven ? 
A St.-Vincent species with thirty-three ? 
P. Edioardsii with thirty-one, with twenty-nine and thirty 
sometimes ? 
A Chilian species with nineteen or twenty-seven or thirty- 
two ? 
A Cape species with fourteen and another with seventeen ? 
or are these the same? 
In the Australian and New-Zealand species the number 
of feet seems fixed. Mr. Wood-Mason has informed me that 
he has obtained a new species from the Cape, tvliich he will 
shortly describe. I trust that he and Prof. Perceval Wright 
may be able by more careful investigation of the various forms 
to clear up the confusion which certainly prevails as yet with 
regard to the species of this isolated genus. 
XXXI .—On the Bryozoa ( Polyzoa ) of the Bay of Naples. 
By Arthur Wm. Waters, F.G.S. 
[Plates XXIII. & XXIV.] 
[Continued from p. 202*.] 
Cyclostomata. 
The classification of the Cyclostomata is even more diffi¬ 
cult than that of the Cheilostomata, which partly arises 
from there being fewer characteristics upon which it can be 
grounded. 
The winter time, when I made the collection, seems to have 
been specially unfavourable for studying this suborder ; for I 
seldom received colonies with active polypides, and I have 
been surprised to find what a large number have no ooccia. 
We shall probably ultimately have to adopt an arrangement 
with the Cyclostomata somewhat similar to that introduced by 
* Note to ptn/e 199.— I find there is a fifth genus Buskin, created by 
the Rev. Tenison Woods, in Proc. Roy. Soc. Tasmania, 1870. This has 
already been shown by Mr. Etheridge, Jun., to be a duplicate name. 
