204 ARION SUBFUSCUS. 
Denmark, Sweden, and Norway, and it is not improbable that the slugs 
recorded as Arion hortensis from Siberia really appertain to this species. 
It has also been noted from the United States, New Zealand, and other 
places, where it has been introduced by commerce. 
In the British Isles, this species is well distributed throughout the 
country, except in East Anglia, where it is apparently absent, no authentic 
record of its occurrence within that area being known, nor have we ever 
seen an example therefrom. 
This remarkable scarcity or absence from the Hast Anglian district, taken 
in conjunction with its increasing abundance westward and in Ireland, i is 
strongly corroborative of A. subfuse us being one of the weaker and less 
adaptable species, which are being gradually but surely expelled from the 
eastern regions of this country. 
Geographical Distribution 
of 
Arion subfuscus (Drap.). 
HEB Recorded Distribution. 
[_]Probable Range. 
Fic. 220. 
ENGLAND AND WALES. 
Channel Isles—V. cineveo-fusca, St. Sampson’s, Guernsey, Sept. 1891! B. Tomlin. 
PENINSULA; 
Cornwall W.—Trevedock rd., St. Columb, May 1885 ! W. Vinson. Penzance, Jan. 
1905! L. E. Adams. Type and var. cinereo- fusca, Truro, May 1886! J. H. James. 
Cornwall E.—Garden bank, and Queen’s Hill, St. Columb, May 1885 ! W. Vinson. 
Devon S.—Common at Topsham, Sept. 1892! Lionel E. Adams. Type and var. 
cinereo-fusca, Teignmouth, Oct. 1888 ! L. St. G. Byne. 
Devon N.—Dartmoor, July 1889! W. A. Gain. Type and var. cinereo-fusca, 
Belstone near Okehampton, Sept. 1904! Rev. W. Wright Mason. 
Somerset S.—Type and var. brunnea, allotment gardens near canal, Bridgwater, 
Aug. 1884! W. Vinson. 
CHANNEL. 
Wilts. N.—Manton near Marlborough, E. Meyrick, Sept. 1904. 
Dorset—Chideock, Bridport, Aug. 1885! A. Belt. Portland, Aug. 1886! J. 
Saco Stour Provost (E. W. Swanton, Nat. Journ., March 1902). Broadstone, 
Parkstone, July 1904! T. D. A. Cockerell. Var. cinereo-fusca, Montevideo, Chick- 
erell, near Weymouth, Sept. 1904 ! Nelson M. Richardson. 
Isle of Wight—Yarmouth, May 1887! C. Ashford. 
Hants. S.—Garden, Christchurch, Noy. 1884! Burton, Apr. 1890; Roeshot Hill, 
June 1890 ; 3olderwood, Aug. 1887 ; and Southampton, C. Ashford. Hambledon, 
May 1904! C. 8. Coles. 
Hants. N.—Type and sub-var. brunnea, Preston Candover, Noy. 1885 ! Rev. H. P. 
Fitzgerald. 
Sussex W.—T'ype and var. cinereo-fuscu, Up Park, Ang. 1886! W. Jeffery. 
