162 Proceedings of the Royal Physical Society. 
III. A List of Land and Freshwater Shells found in the County of 
Caithness. Bj Charles William Peach, Esq., Wick. 
In 1861 Mr A.. G. More, of Bembridge, in the Isle of 
Wight, informed me that he was collecting materials for 
illustrating the British Land and Freshwater MoUusca, 
according to the method employed by Mr H. C. Watson, in 
his " Cybele Britannica," and asking for information about 
Caithness, it being included in his Province 17. He then 
was " only able to enter a single shell, Alasmodon margarati- 
fera?' Although I had then paid very little attention to the 
subject, I had picked up a few specimens whenever they 
came in my way, and put them away for those who might 
want them. At once I turned over my hoards and made 
out a list. Not contented with merely sending this, I for- 
warded many of the shells, and thus, instead of " only onel' 
he had seventeen to place in his " Province 17." I have con- 
tinued to gather, and now, as may be seen by the accom- 
panying list, we have thirty species. In order that I might 
speak with certainty, I have asked authorities to examine 
all the specimens for me. Foremost, Mr J. G. Jeffreys, of 
London, the author of the valuable work the " British Con- 
chology," vol. i., 1862, used to name and arrange the list by, 
has seen the shells; the Eev. Mr Norman, the slugs. Mr 
More has also seen many of the shells. I feel under great 
obligations for their prompt and kind assistance. With the 
exception of Helix ericetorum, I have found all in the parish 
of Wick ; many of them have been found as well in different 
parts of the county. My examination has not been a very 
strict one, nor very extended, for a great part of the county 
I have never been in, especially inland, where additions may 
be most expected. The last summer I added two species of 
freshwater shells to the list, and as well confirmed three or 
four others of which I had before only doubtful specimens. 
I have hopes of assistance from others, for Miss Gunn of 
Reisgill, Mr Shearer of Ulbster, and Mr Anderson, of the 
" John o'Groat Journal " here, have entered on the pursuit 
successfully ; and although at present they have added no 
