164 
Proceedings of the Royal Physical Society. 
" Everywhere from Aberdeenshire to the Channel Isles." I got this 
at 'Rqiss, fine, under similar circumstances that Mr Jeffreys did at Swan- 
sea, — " in an old quarry into which no stream flows." 
Avion ater, in many localities. 
A. hortensis, a pest especially in gardens 
Limax fiavus, several places. 
L. agrestis, another pest in fields, &c. I got also a very dark one, 
hitherto considered a variety of the above, now L. parvulus of Normand, 
a French conchologist. 
* Succinea elegans, in several places, but far from common. 
Vitrina pellucida, in many localities. 
Zonites cellarius, as the above. 
Z. alliarius, generally diffused, has a strong garlic-like smell. 
Z. nitidulus^ Wick, rare; Jeffrey's range, "Moray Firth district to 
Guernsey." 
Z. crystallinus, Whaligo, Wick, and Freswick ; Jeffrey's range as 
above. 
Helix nemoralis, variety hortensis. In several localities, generally 
on the sea-coast. 
Helix arhustorum, same localities. 
H. ericitorum. On sandbanks between CastlehiU and Murkle, and 
on the Links at Reay. Jeffreys says, " Apparently not ranging farther 
north than the Hebrides." 
Helix rotundata, several places. 
Pupa umhilicata, as the above. 
Clausilia rugosa, in the cliffs on the sea-coast, near Girnigo Castle, 
Southhead Wick, and old limekiln near Hemprigs. 
Cochlicopa luhrica, in several places. 
So far the list for Caithness. I am, however, desirous of 
adding two shells found by me in Sutherlandshire, believing 
they are of sufficient interest to be noticed here. 
Helix rwpestris, on limestone rocks at Durness, in August 1857. 
Rare. Fleming mentions it as a Scottish species. 
Bulimus acutus, sandhills at Auldshore Beg, near Cape Wrath, July 
1861, and at Durness, August 1857, associated with Helioe ericetorum. 
It is strange not to find the B. acutus with the latter shell in Caithness. 
Dr Gordon says — " Collected in Caithness, and found in rather a suspicious 
locality — on a mantelpiece." 
It is the only authority he has for including it in his list ; 
he however says, It is not without some hesitation that 
this pretty species is here included," a caution I fully agree 
with, having sought for it attentively, and so far in vain. 
