P isidium, 
q q Preiffer. 
TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 178 
LIsT OF SPECIES, INCLUDING ALSO SOME VARIETIES, OF 
MOLLUSCA OBSERVED IN THE ISLAND OF BUTE. 
The arrangement and nomenclature of J effreys’ Br wet Con- 
chology are followed. 
Conchifera. 
SPH #RIIDA., 
Pisidium fontinale (Drapernaud).—Loch Fad ; frequent. 
a pusillum (Gmelin).—Loch Fad, Loch Ascog, and other 
places. 
a nitidum, J enyns.—Loch Fad; frequent. 
Gasteropoda. 
LIMN HID. 
Planorbis nautileus (Linné).—Loch Ascog, Greenan Loch. 
a Be var. alba, mihi.—Loch Ascog; rare. 
iN albus, Miiller.—Loch Fad, Greenan Loch. 
a glaber, Jeffreys (P. parvus Say).—Greenan Loch. 
5 sptrorbis, Miiller.—Small loch or pond near Ascog. 
3 contortus (Linné).—Loch Fad, Greenan Loch. 
ee fontinalis (Linné).—Side of Loch Fad. 
Limneea peregra (Miiller).—Common in ditches and lochs. 
iS palustris (Miiller).—Marshy ground at the west end 
- of Greenan Loch. 
5 truncatula (Miiller).—Frequent in ditches and lochs. 
PAncyius fluviatilis, Miiller.—Loch Fad, Loch Ascog. 
LIMACIDA. 
Arion ater (Linné).—Common. 
Inmax gagates, Drapernaud.—Frequent in a garden near the 
Aquarium. 
of marginatus, Miiller.—Not very common in the vicinity 
of the Aquarium. 
a agrestis, Linné.—Common. 
»  arboruwm, Bouchard-Chantereaux. —Frequent; vicinity of 
the Aquarium, near Loch Fad, and on beech _trees 
west of Rothesay. 
» maximus, Linné.—Vicinity of the Aquarium, among 
herbage on the shore at Ettrick Bay, and other 
places. 
A leevis, Miiller.—Frequent in damp situations under stones ; 
shore of Loch Fad, and other places. 
