THE LAND AND FRESH-WATER MOLLUSCA. 
By Tuomas Scott, F.L.S., Aberdeen. 
ARRANGEMENT AND NOMENCLATURE. 
List of British Land and Fresh-water Mollusca, prepared by a Committee 
of the Conchological Society of Gt. Britain and Ireland (J. of Conch. vol. 
vii., p. 49-66, 1892.). 
AUTHORITIES AND REFERENCES. 
(B.)=Binnie, F. G., “List of the L. and F.W. Mollusca of Clydesdale.” 
(Fauna and Flora of the West of Scotland, 1876). 
(C.)=“ Census of Scottish L. and F. W. Mollusca,” by W. Denison Roebuck, 
(Roy. Phys. Soc. Edin. Proc., vol. x., (1891), p. 437-503). 
(D.)= Dougall, John, “The L. and F. W. Mollusca found within ten miles of 
Glasgow,” (WV. H. Soc. Glasg. Trans., vol. 1., p. 188, 1867). 
(E.)= Evans, Wm., F.R.S.E., MS. List of Clydesdale Mollusca. 
(G.)=Scott, Thos., F.L.S., “On the L. and F.W. Mollusca of Greenock,” 
(WV. H. Soc. Glasg. Trans., 1886, vol. 1., GN.) p2,29). 
(H.)=Haddin, Wm., “On the distribution of the Helicidae in Bute, and 
in the vicinity of Largs,” (WV. H. Soc. Glasg. Trans., vol. 1., p. 247, 
1869). : 
Bee ht Rev. G. A. F., MS. List of Clydesdale Mollusca. 
(N.)=“Supplementary Lists of L. and F. W. Mollusca,” by W. D. Roebuck, 
(Ann. of Scot. Nat. Hist.). | 
(S.)=Scott, Thos., F.L.S., “The L. and F. W. Mollusca of Bute,” (V. H. Soe. 
Glasg. Trans., 1881, vol. ii. (N.S.), p. 125, vol. tii, 189i, p. 170): 
(T.)=Scott. Thos., F.L.S., “ Preliminary notes on the L. and F. W. Mollusca. 
about Tarbert, L. Fyne,” (J. of Conch., vol. v., 1886, p. uy: 
(W.)= Watt, Hugh Boyd, MS. List of Clydesdale Mollusca. 
M.=Marsh; Cnl.=Canal; Gl.=Glen ; Wd.=Wood; C.=Common ; 
R. =rare, ete. 
Chass CEPHALA. 
Sub-order Pulmonata. 
Fam. Arionidae. 
Arion ater (Lin.).—C. and gen. dist. 
var. succinea. Garscadden; nr. Skelmorlie ; Maybole (C.). 
var. nigrescens. Garscadden ; Bute ; E. Tarbert (C.). (Neither of these 
var. names occur in Conch. Soc. list). 
A. subfuscus, Drap.—Dunoon ; Bute; E. Tarbert (C.), bet. Elvanfoot and 
Leadhills (E.). 
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