PORIFERA OF THE L.M.B.C. DISTRICT. PAUTS 
of Anglesey. The first specimen was got in Penrhos Bay, 
from a depth of about ten fathoms. More material was 
taken off Towyn (twelve fathoms), and lastly off Rhos- 
colyn Beacon (twelve fathoms) the dredge brought up a 
specimen larger than any sponge ever found in our district, 
and probably not exceeded in size by any sponge ever col- 
lected on the British coast. It measures horizontally 31 
‘em. by 20 cm., and vertically 12 cm. The figure on jet 
XII. represents the specimen in not quite one-half natural 
size. I drew it froma photograph which Mr. Benjamin 
Davies (Physical Laboratories, University College, Liver- 
pool) had kindly taken from the specimen after it had been 
in spirit for some time. Those members of our expedition 
who attempted to photograph it on board of the “ Hyena” 
were less successful. 
The colour of the largest and of most of the smaller 
specimens, when alive, was ochreous-yellow. But the 
first specimen which we got from Penrhos Bay, was dis- 
tinctly sulphur-yellow. The oscula are large and well 
marked. They have the shape of slits, and measure from 
2by1mm.to8by3 mm. Two of them are seen in the 
figure upon one of the smaller lobes. A row of oscula on 
the upper edge of the largest lobe could not be represented 
in the figure. The pore-areas form extremely numerous 
and well-marked circular patches (2 mm. in diameter) on 
the extremity of very short papille, just projecting beyond 
the level of the sponge. In the “ sinuous” form of Cleona 
celata those little papille with their pore-areas are generally 
the only things which are visible inside of or projecting 
from the smal circular holes of the inhabited and perfor- 
ated shell. 
The spicules are tylostyli. They measure 0°315 mm. by 
0-008 mm. A few of them were smaller, down to 0°225 by 
Q°003 mm. <A vertical section through the sponge shows 
