ARION ATER. 189 



, . . „ , . „ ,. IRELAND. 



Antrim— bub-vav. mgrescens, Colin Glen near Belfast, June 1884 ! S. A. Stewart. 



Down— Sub-var. nigrescens, Slieve Donard, alt. 1,500 feet, Sept. 1884 ! and New- 

 castle, Oct. 1884 ! Rev. H. W. Lett. 



Monaghan— Common in fields about Cremoine, Aug. 180.5, Mr. Templeton 

 (Thompson, Ann. Nat. Hist., 1840, p. 10). Sub-var. nigrescens, Carriokmacross, 

 July 1904 ! P. H. Grierson. 



Tyrone— Sub-var. nigrescens, Baronscourt, Sept. 1904 ! Robert Bell. 



Fermanagh— Enniskillen, Sept. 1904 ! Dean of Clogher. 



Dublin — Road-sides around Donnybrook, August 1888 ! G. Barrett-Hamilton. 

 Sub-var. nigresceiis. Kingstown, June 1886 ! W. F. de Vismes Kane. Howth, 

 Apl. 1887 ! R. F. Scharff. Cabragh Old Road, Dublin, Apl. 1886 ! J. R. Redding. 



Wicklow — Enniskerry, Aug. 1904 ! P. H. Grierson. 



Carlow — Sub-var. nigrescens, gardens, Fenagh House, Bagenalstown, Sept. 1904 ! 

 Denis R. Pack-Beresford. 



Westmeath — Sub-var. nigrescens, Knockdrin Demesne, Apl. 1892 ! R. F. Scharflf. 



Roscommon — Var. marginella and sub-var. nigrescens. Mote Park, Roscommon, 

 Sept. 1904 ! Lord Crofton, 



Leitrim— Sub-var. nigrescens, Swiss Valley, Glencar, July 1904 ! A. W. Stelfox. 



Mayo W. — Sub-var. nigrescens, Annagh, and Dugort, Sept. 1886 ! J. G. Milne. 



Galway W.— Aran Isles, Nov. 1890, R. F. Scharff. 



Clare — Sub-var. nigrescens, Doonass, Aug. 1904 ! R. A. Phillips. 



Limerick — Subvar. nigrescens, Castleconnell, Sept. 1904 ! R. A. Phillips. 



Tipperary N. — Shores of Lough Derg, etc., Sept. 1904 ! G. J. Fogerty. 



Waterford — Var. marginella and sub-var. nigrescens, Raywell near Clonmel, 

 April 1888, A. H. Delap. 



Cork N. — Sub-var. nigrescens, Macroom, July 1904 ! P. H. Grierson ; and Con- 

 vamore, Ballyhooley, Sept. 1904 ! J. N. Milne. 



CONTINENTAL DISTRIBUTION. 



Belgium — Sub-var. marginata, fields about Vielsalm, June 1867 (Colbeau, Bull. 

 Mai. Soc. Belg., 1867). 



France — Var. marginella, in the Oise, Maine-et-Loire, and the Vosges, also 

 about Vannes in Morbihan, and Chirac in Lozfere. Sub-var. griseo -marginata, in the 

 wood of Mont-Saxonnet, Savoy, at an altitude of 3,300 feet. 



Germany — Var. marginella, Spreewaldes, Brandenburg; Neuburg, Bavaria; and 

 in Alsace. 



Austro- Hungary — Var. marginella. North Bohemia (Slavik, Moll. Bohm., 1869). 



Portugal — Sub-var. nigrescens, recorded by Morelet for the neighbourhood of 

 Monchique, Tras-os-Montes. 



Norway — Sub-var. marginata, Bergen, Laurvig, and Hardanger. 



Denmark — Var. marginata, rare in gardens, Frederiksdal (Westerlund, 1897). 



Russia — Sub-var. swammerdaynii is recorded by Kaleniczenko as found about 

 Sumy in Kharkov, but the record is said by Siraroth to be erroneous. 



Var. maculata Dum. & Mort., Cat. Moll. Savoie, 1857, p. 5. 



Arion i^Lunax) rttfus var. maculaUis Dum. & Mort., op. cit. 



Animal with shield maculated with black. 

 France — Savoy (Dum. & Mort., op. cit.). 



Monst. sinistporsum Taylor. 



Animal with respiratory and other orifices on tlie left side of the body. 



France — A single specimen of the var. rufa found in the wood at M^rard, depart- 

 ment of the Oise (Baudon, Journ. de Conch., 1884, p. 196). 



Geographical Distribution. — Ar\on ater, as probably one of the 

 latest evolved species of the genus, has not yet obtained the wide dispersal 

 that characterizes some of the simpler forms by which it was preceded. 



On the continent, the aggregate form is well distributed throughout 

 Central Europe, but apparently blending or intergrading near the outskirts 

 of its range with Arion subfuscus, with which species it has been frequently 

 confused by various writers^ 



