72 LIVERPOOL BIOLOGICAL SOCIETY. 
ciatus, Danaia dubia, Atylus falcatus, Microprotopus 
maculatus and Corophium bonellir. Mr. Walker also reports 
that in dredging on sand and mud in two and a half 
fathoms, at Colwyn Bay, in November, he came across a 
great number of females and one or two immature males 
of Diastylis bradyi, and a single adult male of D. spinosa, 
and he suggests that possibly the so-called immature 
males of D. bradyi may really be the females of D. spinosa. 
The pretty little Amphipod Megaluropus agilis, first 
described by Dr. Norman only last June, is now found to 
be not uncommon in Colwyn Bay. Mr. Walker informs 
me that the collections of Crustacea we have made this 
year exceed in bulk those of any previous year, and 
although they are not yet half worked out they have 
yielded a considerable number of novelties. 
Towards the end of July, Mr. I. C. Thompson, the late 
Professor W. R. McNab, of Dublin, Mr. R. J. H. Gibson 
and I were at Puffin Island for a few days. Professor 
McNab and Mr. Gibson worked partly at the Alge and 
partly at the land plants; while I occupied myself with 
further observations on the distribution of the animals 
over the littoral zone. At this time there were con- 
siderable numbers of two species of Pycnogonids on the 
under sides of stones. The one (Nymphon sp.) is of a 
straw-yellow colour, and is found adhering to Sertularian 
Zoophytes which are of the same tint; while the other 
species (Phoxichilus spinosus) is red and affects Tubularia, 
and a sea-weed (Chylocladia articulata) having also a dull 
red tint. 
We have found the following Nudibranchs during the 
year at Puffin Island:—Doris tuberculata, D. proxima, 
Gomodoris nodosa, Ancula cristata, Tritonia plebera, Holis 
viridis, and the spawn of Tergipes despecta. No specimens 
of Dendronotus arborescens have yet been seen, so very 
