108 LIVERPOOL BIOLOGICAL SOCIETY. 
presents the more tawny yellow colouring of H. pustulata, 
along with the dark granules found in C. nana. Both 
individuals have the foremost row of dorsal processes in 
front of the dorsal tentacles, and in both the radula is 
identical with that of C. nana, as figured by Alder and 
Hancock. These two forms are evidently very closely 
allied, if indeed they can be considered as distinct species. 
Galvina picta, Ald. and Hance. 
We found this species at Hilbre Island, on 2nd March, 
1889. 
Fiona marina, Forskahl. 
Fiona nobilis, Ald. and Hane. 
Three specimens of this species, which is an addition 
to our fauna, have been found in the district since the 
last report. Mr. Thompson collected two specimens at 
Penmaenmawr, in July, 1886; and Mr. Vicars found the 
third near the end of the Southport pier at low tide 
in 1887. 
We add a table showing the distribution of the species 
of Nudibranchiata in the four parts of the L. M. B. C. 
district in which they have been most carefully collected 
and recorded. ‘The first column includes Huilbre Island, 
while the third takes in the entrance to the Menai Straits 
and Bangor: we separate Puffin Island from the preceding 
region, merely because it may be convenient for those 
working at the Biological Station to know what species 
may be found on their shore. Fourteen species have now 
been found on Puffin Island and the immediate neigh- 
bourhood. 
