THE LAND AND FRESH- WATER MOLLUSC A. 

 BY THOMAS 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 (/. 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," (N. H. Soc. Glasg. Trans., vol. i., 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," 



(N. H. Soc. Glasg. Trans., 1886, vol. i., (N. S.), p. 279). 

 (H.) = Haddin, Win., "On the distribution of the Helicidae in Bute, and 



in the vicinity of Largs," (N. H. Soc. Glasg. Trans., vol. i., p. 247, 



1869). 



(K.) = Knight, 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," (N. H. Soc. 



Glasg. Trans., 1881, vol. ii. (N. S.), p. 125, vol. iii., 1891, 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. 72). 

 OV.) = Watt, Hugh Boyd, MS. List of Clydesdale Mollusca. 

 M. = Marsh; Cnl.= Canal; Gl.=Glen; Wd. = Wood; C,=Common; 



R. = rare, etc. 



CLASS CEPHALA. 



Sub-order Pulmonata. 

 Fam. Arionidae. 



Arion ater (Lin.}. C. and gen. clist. 



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.). 



