ARION ATER. 187 
ENGLAND. 
Cornwall W.--Sub-y. subreticulata, Truro, J. H. James (Cockerell, Se. Goss. aie ). 
IRELAND. 
Antrim—Murlough, May 1897, Lionel E. Adams. 
Louth—Carlineford, Dec. 1904! P. H. Grierson. 
Dublin—A sub-var. with deep black interstices, a blackish mid-dorsal line, and 
blackish shield, with indications of darker median and lateral-lines, was found at 
Howth, May 1892, R. F. Scharff. 
Cork N. Sovran: Noy. 1884! W. F. de Vismes Kane. 
Var. fasciata Van den Broeck, Mem. Soc. Mal. Belg., 1869, p. 87. 
Arion rufus var fasciatus Van den Broeck, Mem. Soc. Mal. Belg., 1869, p. 87. 
Arion ater var. subdeletus Cockerell, Science Gossip, Aug. 1886, p. 187. 
Arion ater var. fasciata Cockerell, Science Gossip, Feb. 1889, p. 44. 
ANIMAL with a black or blackish lateral band on each side of the body and shield. 
The sub-var, subdeleta is greenish or yellowish-grey, lateral banding brownish 
and very indistinct, head and tentacles blue-black. 
This variation, which is an illustration of colour development, arrested at the 
banded juvenile stage, is liable to occur in all the various ground colourings, but 
is more frequently met with in [Ireland and other countries towards the limits of 
the distributional area of the species, than at or near the more active evolutionary 
centre, where the more uniform typical colouration of the body is more consistently 
and generally acquired. 
ENGLAND AND WALES. 
Cornwall W.—Snub-var. plunbeo-fasciata, St. Columb, May 1885 ! W. Vinson. 
Kent E.—One specimen, sub-var. brunneo-fasciata, Dover, Ap. 1899, L. E. Adams. 
Norfolk E.—Sub-var. brunneo-fasciata, Strumpshaw Hall, July 1904! W. J. O. 
Holmes. 
Stafford—Sub-var. brunneo-fasciata, near Stafford, Aug. 1886 ! L. E. Adams. 
Pembroke—Sub-v. brunneo-fasciata, North Cliff, Tenby, Feb. 1898! A. G. Stubbs. 
Derby—One specimen, sub-v. brunneo-fasciata, Norbury, June 1897, L. E. Adams. 
York S.W.—One specimen, sub-var. brunneo-fasciata, Penistone, L. E. Adams. 
IRELAND. 
Derry—Sub-var. brunneo-fasciatau, Magilligan, Sept. 1904! J. N. Milne. 
Antrim—Sub-var. plumbeo-fasciata, Broughshane, June 1886 ! Rev. S. A. Brenan. 
Monaghan—Sub-vars. brunneo-fasciata and nigrescens-fasciata, Carrickmacross, 
July 1904! P. H. Grierson. 
Meath—Sub-var. brunneo-fasciata, Drumeondra and Slane, July 1904! P. H. 
Grierson. 
Dublin—Sub-var. brunneo-fasciata, Pee the-Grange, April 1886 ! and Glen 
Druid, near Carrickmines, Oct. 1886! W. F. de Vismes Kane. 
Wicklow—Sub-var. livida-fasciata, ney Aug. 1904! P. H. Grierson. 
Leitrim—Sub-var. brunneo-fasciata, Swiss Valley, Glencar, July 1904! A. W. 
Stelfox ; and Molill, July 1904! P. H. Grierson. 
Mayo W.—Sub-var. aurantia-fasciata, Enniscoe Demesne, Sept. 1885 ! W. F. 
de Vismes Kane. 
Tipperary N.—Sub-var. brwnneo-fusciata, shores of Lough Derg, Sept. 1904 ! 
G. J. Fogerty. 
Cork S.—Sub-var. rufo-fasciata, common at Glengariff, Sept. 1898, L. E. Adanis. 
CONTINENTAL DISTRIBUTION. 
Belgium—Var. rufo-fasciata, Bel-Oeil, Hainault and Fond de Forét near Liége. 
rf + as a in € LO 
Var. marginella Schranck, Fauna Boica, 1803, p. 252, no. 3158. 
Limax marginellus Schranck, op. cit. 
Arion empiricorum swammerdaniui Kalenicz., Bull. Mosc., 1851, t. xxiv., pt. ii., p. 113. 
Arion empiricorum razoumowsksiz Kalenicz., op. cit. 
Arion rufus marginatus Moquin-Tandon, Hist. Moll., p. 11, pl. i, f. 24. 
Arion rufus N nigrescens Moquin-Tandon, op. cit. 
Arion ater var griseo-marginata Dum. & Mort., Cat. Moll. Savoie, 1857, p. 6. 
ANIMAL with black body and shield, foot-fringe yellow or vermilion red. 
The Limax marginellus Schranck, Arion empiricorum swamimerdamii Kal., and 
Arion rufus var, marginata Mogq., all conform to the varietal description. 
The sub-vars. nigrescens Moquin-Tandon and razoumowskii Kal. appear 
identical, the body being blackish in colour, and the foot-fringe yellowish or reddish. 
The sub-var. griseo-marginata has the foot-fringe greyish, 
