9 
Bryozoa from Madeira. By A. W. Waters. 
-enclosed in a triangular space, there are several pores, and the first rib 
occurs below these. 
This is much like G. Gattyx B., and should perhaps be called a 
variety, but it differs in not having so small an area, and in the small 
•pores being in regular rows between the ribs ; whereas in G. Gattyx, 
the pores are larger and are not regularly placed. 
It is impossible to say whether the Flustra Pouilletii Aud. is 
G. radiata or C. setosa, though probably it is the latter. 
The operculum is the same size as that of C. Gattyx B., which is 
smaller than that of G. Balzaci. Both have a similar muscular ridge 
-at each side. 
Gribrilina Balzaci (Aud.), plate III. figs. 31, 32. 
Flustra Balzaci Savigny, Description de l’figypte, pi. ix. fig. 8. 
Lepralia cribrosa Waters, Ann. Mag. Nat. Hist. ser. 5, vol. iii. 
p. 36, pi. ix. fig. 4. 
Collarina cribrosa Jullien, Bull. Soc. Zool. de France, vol. xi. p. 7. 
Gribrilina punctata Hincks var., Ann. Mag. Nat. Hist., ser. 5, 
vol. xvii. p. 266. 
A specimen from Madeira, which had been submitted to Mr. Busk, 
was marked by him “ Balzaci ” ; and although Savigny did not show 
the avicularia, I think it most probable that Savigny had this species 
before him ; and as there has been doubt expressed as to whether my 
G. cribrosa is the species of Heller, it would seem better to accept 
Audouin’s name. In a specimen from Villefranche s. Mer, I do not 
find any avicularia. 
The basal chambers are very marked in this species, and I referred 
to them and figured them in my paper on £ The Bryozoa of the Bay 
of Naples.’ On the outside of the pore-chamber there is a large 
opening, and on the inside a watchglass-like rosette- plate. 
There are 3-5 oral spines. 
The small size of the area and the small pores distinguish this 
from C. punctata Hass., with which there are points of resemblance, 
and I think this is the variety which Hincks described from the 
Adriatic. It more nearly resembles G. Gattyx Busk than G. punctata 
Hass. 
Loc. Naples, Capri, Piapallo, Gfulf of Taranto, Villefranche sur 
Mer, Madeira. 
Lepralia multispinata Busk. 
Lepralia multispinata Busk, Q. Journ. Micr. Sci., n.s., vol. i. p. 78, 
pi. xxxii. fig. 5. 
The ovicell, which was not seen by Busk, is recumbent, granular, 
not perforate, and in shape and position reminds us of that of Phylac- 
tella labrosa B. The aperture is similar to that of Lepralia peri- 
stomata W. This has no lyrula, and is quite a different thing from 
