ARION HORTENSIS. 219 
Geographical Distribution.—4«A. hortensis being the most advanced 
and most recently evolved species of its special section, has not yet attained 
a wide dispersal, being confined naturally to Centr: al Europe, where it 
abounds more especially on cultivated lands. From its close association 
with cultivation it is lable to be transported to other regions, where its 
high and plastic organization almost ensure its dominancy. . 
It is found throughout the British Isles, chiefly congregating in gardens 
and on tilled ground, but is also found on wooded and waste lands far from 
cultivation. 
The recorded continental distribution is not reliable, as this species has 
doubtless frequently been confounded with Arion circumscriptus, a closely- 
allied but more ancient and widely-dispersed species, from which it has 
only in recent years been authoritatively and satisfactorily distinguished. 
ENGLAND AND WALES. 
Channel Isles—Coimmon under stones in Guernsey, Sark, and Herm (Cooke and 
Gwatkin, Quart. Journ. of Conch., 1878, p. 322). Enumerated for Jersey by Lukis 
(Ansted’s Channel Isles, 1862). St. Sampson's, Guernsey, Sept. 1891 ! B. Tomlin. 
PENINSULA. 
Cornwall W.—Stenalee, St. Austell, Sept. 1904! C. P. Richards. Common in 
gardens, Truro, April 1886! and plentiful, Newquay, Sept. 1886, J. H. James. 
St. Ives, Sept. 1885! J. E. Mason.  Sub-var. nigra, Penmon, Falmouth, April 
1884 ! H. Fox. 
Devon S.—Teignmouth, Oct. 1888! Loftus St. G. Byne. Garden, Topsham, and 
at Culverhole Point, Aug. 1892, Lionel E. Adams. 
Devon N.—Northam, Nov. 1885! W. A. Gain. Abundant at Ilfracombe, Meh. 
1887 (b. Tomlin, J. of Conch., April 1887). Belstone, Okehampton, Sept. 1904 ! 
Miss Daisy Mason. 
Somerset S.—Near Porlock, Aug. 1892! Lionel E. Adams. 
Somerset N.—Common in gardens, hedgebanks, and fields (Rev. A. M. Norman, 
Inland Moll. Somerset, 1860). Bath, June 1884! C. J. Waterfall. Sub-var. elongata, 
Wainsgrove, E. W. Swanton (W. E. Collinge, J. of Mal., June 1894). 
CHANNEL 
Wilts. N.—Clyffe Pybard, Swindon, Aug. 1904 ! Rev. E. H. Goddard. Type and 
var. grisea, abundant about Marlborough, E. Meyrick. 
Wilts. S.—Longleat gardens, Warminster, Sept. 1904! J. A. Singer. Type and 
var. subfusca, carden, Steeple Ashton Vicarage, March 1887! Rev. E. P. Knubley. 
Garden, Dunollie Bourne avenue, Salisbury, Sept. 1904! A. R. D. Bacchus, 
Dorset—Purheck and about Blandford, probably generally distributed (J.C. 
Mansel-Pleydell, Moll. Dorset, 1873, p. 110). Isle of Portland, Aug. 18S2, I, 18; 
Adams. Montevideo, Chickerell near W eymouth, Sep. 1804! Nelson M. Richardson. 
Isle of Wight—Enumerated as found in a wood at Bembridge, and as common 
about Ventnor (Venables’ Guide to Isle of Wight, 1860). Hempstead Hill near 
Yarmouth, 1880! Charles Ashford. 
Hants. S.—Mudeford and Chuton, also common and very large in garden at 
Christchureh, Oct. 1884! C. Ashford. Portsdown Hill, May 1885! W. Jeffery. 
Roadsides, Binstead, A. Reynell. Sub-var. cottiana, Southampton, E. W. Swanton 
(W. E. Collinge, J. of Mal., Dec. 1892). 
Hants. N.—Type and var. subfusca, Preston Candover, Oct. 1884 ! Rev. H. P. 
Fitzgerald. 
Sussex W.—Too common in gardens and fields, Up Park, Aug. 1886 ! Cocking 
near Midhurst, Sept. 1886 ! and garden, Ratham, Nov. 1886! W. Jeffery 
Sussex E.—Commion in the Ouse, Cuckmere and East Rother districts (J. H. A. 
Jenner, Eastbourne Nat. Hist. Soc. Report, 1880). Gardens, ete., everywhere com- 
mon, Lewes, Blatchington, Eastbourne, Hastings, B lays ete. (id., Sussex list, 1885, 
p. 6). Gardens, Queen’s road, Brighton, Oct. 1903! F. G. 8. Branwell. In chalk- 
pit on coast near Eastbourne, Sept. 1904! RK. A. Adkin. 
THAMES. 
Kent E.—Folkestone, Oct. 1886 ! Charles Oldham. Ripple Vale near Dover, 
Sept. 1904 ! Mrs. G. Harrison. 
Kent W.—Not so common as Arion ater about Sevenoaks (R. H. S. Smith, Zool., 
1854, p. 4333). Dartford (H. C. Leslie, Q.J.C., 1874, p. 34). Hever, Edenbridge, 
Feb. 1898! A. Leicester. Type and var. subfusca, St. Mary Cray, Sept. 1884! 
S. C. Cockerell. Vars. fasciata and grisea, Chislehurst, Sept. 1884! T. D. A. 
Cockerell. Var. fasciata, garden, Blackheath (Gray ’s Turton’s Manual, 1840, p. 108). 
