198 LIVERPOOL BIOLOGICAL SOCIETY. 
therefore they cannot be identical with Halisarca rubra. 
It is well known that the colour in Sponges is sometimes 
caused by ova.* Still that could scarcely be the explana- 
tion of the red cells in Halisarca rubra, as the nuclei of the 
cells in question are much too small to be the germinal | 
vesicles, and in general appearance the cells did not re- 
semble ova. 
Order Il. GERATOSA, 
Spongelia fragilis, Montagu. 
To the two localties where this species had been found 
previously, Church Bay, near Holyhead, and Puffin Island, 
I am able to add now Penrhos Bay, Anglesey, where we 
dredged it on the ‘‘ Hyzena’”’ Expedition of May 25th, 1890. 
This form is probably identical with Lendenfeld’s + 
Spongelia fragilis var. wregularis. Still there is some differ- 
ence in the colour. Lendenfeld says in regard to his 
variety, ‘‘the colour of the living sponge is dull violet-red 
on the surface and yellowish in the interior.”” My speci- 
mens are of a yellowish sand-grey throughout. 
Order II]. MONAXONIDA, 
Renera varians, Bowerbank. 
This species, which has been recorded from the Mersey 
and Hilbre Island, has now been discovered also at Puffin 
Island. JI found one specimen hanging from a ledge of 
rock at the north end, below the Biological Station, in 
April, 1889. The under surface of this particular rock 
was literally covered with other species of sponges: Clathria 
seriata, Plumohalichondria atrasanguinea, Amphilectus incrus- 
* Carter, ‘‘ Notes Introductory to the Study and Classification of the 
Spongida, A.M.N.H.,” 4th ser., vol. xvi., p. 37. 
+ R. v. Lendenfeld, ‘‘ A Monograph of the Horny Sponges,” p. 662. 
