TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 172 
rambles were never lacking in interest, and I now 
look back on these hours, “snatched from sleep” that 
they might be given to the study of natural history, 
as the pleasantest and happiest I spent in Bute. 
It was my intention to have explored the whole 
island, but the shortness of my stay prevented this 
being done. All that I was able in some measure 
to overtake was the examination of the central and 
perhaps the more interesting portion of it, which 
may be roughly defined as bounded by Kames Bay 
and Ettrick Bay on the north, and Kerrykroy and 
St. Ninian’s Bay on the south. It will be observed 
that within this area are included the principal 
lochs of the island, and judging from its physical 
conditions in other respects, it might reasonably be 
expected to yield as great a variety of forms of 
molluscan life as either of the parts to ae north 
or the south of it. 
In referring to the distribution of the Mollusca 
within this area, it may be well first of. all to note 
some of the species observed in the vicinity of the 
Royal Aquarium. 
As already remarked, the lateness of the season 
when I came to Rothesay caused me at first to 
confine my researches to the neighbourhood of the 
Aquarium, but the advent of longer daylight did 
not prevent me from still taking an occasional look 
around its vicinity. Among the species observed 
here were Limax (Amalia) gagates, L. (Amalia) 
marginatus, Helix aspersa var. depressa, H. arbus- 
torum type and var. marmorata, besides a number 
of more common forms. 
_ During the spring and early summer months, on 
the glass sides of the fresh-water tank in which a 
number of large pike were kept there might fre- 
quently be seen considerable numbers of Planorbis 
nautileus creeping about, as well as small individuals 
of Lamnea; while in another tank, in which were a 
number of perch and roach, not a molluse was to 
