15 
Bryozoa from Madeira. By A. W. Waters. 
regularly punctured. The ovicells are subimmersed. This is, of 
nourse, closely allied to P. eoncinna B., which is subject to consider- 
able variation. It has a broad lyrula (denticle), whereas Iiincks, in 
his Brit. Mar. Polyzoa, says P. minuta has no denticle ; but in a 
specimen from Hastings, in my collection, there is a broad lyrula 
placed very deep down, so that it is easily overlooked. 
Porella nitidissima Hincks, plate III. fig. 24. 
Porella nitidissima Hincks, Ann. Mag. Nat. Hist., ser. 5, vol. vi. 
p. 78, pi. x. fig. 2 ; Kirkpatrick, op. cit. ser. 6, vol. i. p. 81. 
Specimens in Mr. J. Y. Johnson’s collection have many zooecia 
without the lateral avicularia ; in fact, in the first specimen examined 
I did not notice them. The surface of the zooecium and of the ovicell is 
pitted all over. On the dorsal surface there are about six distal pore- 
chambers, while the lateral walls are merely perforated by the rosette 
plates without any chambers. This seems closely allied to P. con- 
■cinna. 
Loc. Madeira, Mauritius. 
? Phylactella punctig era sp. nov., plate III. fig. 13. 
Although I do not think the genus Phylactella can stand as at 
present defined, since the elevated peristome occurs in widely diver- 
gent genera, yet we may find that some members form a group 
furnishing other characters in common, and, therefore, as the present 
form is closely allied to P. labrosa , the name is provisionally re- 
tained. 
It differs from P. labrosa Busk in having no median denticle. 
The ovicells are punctured, and the operculum has the thickened band 
a short distance from the border, as in P. labrosa , which seems to 
furnish a proof of the relationship of the two species. Under Phylac- 
tella rather widely divergent forms have been placed, as for instance 
Lageniporci ( Cellejpora ) lucida Hincks. 
? Phylactella labrosa (Busk), plate III. fig. 14. 
For synonyms see Hincks, Brit. Mar. Polyz., p. 357. 
Hincks gives the ovicell punctured ; whereas Busk, who does not 
mention the denticle in the aperture, says the ovicell is smooth, and 
it is possible that a mistake has been made, or else the species is 
subject to this variation. At any rate the Madeira specimen agrees 
with Mr. Hincks’ description and figure. I have not been able to 
figure a perfect oprculum. 
In the collection sent to me, I have, besides the species mentioned, 
seen the following, and have added a stai* to those not previously 
noticed as occurring off Madeira. 
*Alysidium Lafontii Aud., Bcrupocellaria Delilii Aud., *Beania 
hirtissima Hell., Membranipo rel l a nitida Johnst, Omychocella angu - 
