204 ARION SUBFUSCUS. 



Denmark, Sweden, and Norway, and it is not improbable that the slugs 

 recorded as Arion hortemis 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 East Anglian district, taken 

 in conjunction with its increasing abundance westward and in Ireland, is 

 strongly corroborative of A . subfuscus 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 subjuscus (Drap,). 



^^1 Recorded Distribution. 

 I MProbable Rang:e. 



Flc. 22U. 



ENGLAND AND WALES. 

 Channel Isles— V. i-inrrm-fusca, St. Sampson's, Guernsey, Sept. 1S91 ! V>. Tonilin. 



PEXf.y.SULA 



Cornwall W.— Trevedock rd. , St. Colunil), May 1885 ! W. Mnson. Penzance, Jan. 

 1905 ! L. E. Adams. Tj-pe and var. cincreo-fusca, Tniro, May 1886 ! J. H. James. 



Cornwall E.— Garden bank, and Queen's Hill, St. Colunil), May 1885 ! W.Vinson. 



Devon S. — Common at Topsham, Sept. 1892 ! Lionel E. Adams. Type and var. 

 cliureo-fuscii, Teignmouth, Oct. 1888 ! L. St. G. Byne. 



Devon N.— Dartmoor, July 1889 ! W. \. Gain. Type and var. clncrco-fuum, 

 Belstone near Okehampton, Sept. 1904: ! Rev. W. Wright Mason. 



Somerset S. — Type and vai-. 6)'»?iH(Y', allotment gardens near canal, Bridswater, 

 Aug. 1884! W.Vinson. 



CHANNEL. 



Wilts. N.— Manton near JIarlborougli, E. Meyrick, Sept. 1904. 



Dorset— Chideock, Bridport, Aug. 1885! A. Belt. Portland, Aug. 1886! J. 

 .Madison. Stour Provost (E. W. Swanton, Nat. Jonrn., March 1902). Broadstone, 

 Parkstone, July 1904 ! T. D. A. Coekerell. Var. ciiieiro-fwsca, Montevideo, Chick- 

 erell, near Weymouth, Sept. 1904 ! Nelson M. Richardson. 



Isle of Wight— Yarmouth, May 1887 ! C. Ashford. 



Hants. S.— Garden, Christchurch, Nov. 1884! Burton, Apr. 1890; Roeshot Hill, 

 June 1.S90 ; Bolderwood, Aug. 1887 ; and Soutliampton, C. Ashford. Hambledon, 

 May 1904 ! C. S. Coles. 



Hants. N.— Type and sub-var. bruiiimi. I'roslim Candover, Nov. 1885 ! Rev. H.P. 

 Fitzgerald. 



Sussex W.—'I'yiie anil \ar. riiiciro-fiisrii, Up Park, Aug. 1886! \V. JeM'ei-y. 



