ARION ATER. 189 
IRELAND. 
Antrim—Sub-var. nigrescens, Colin Glen near Belfast, June 1884! 8. 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 Cremorne, Aug. 1805, Mr. Templeton 
(Thompson, Ann. Nat. Hist., 1840, p. 10). Sub-var. nigrescens, Carrickmacross, 
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. nigrescens. 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. Scharff. 
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—Snub-var. nigre SCENS, Doonass, Aug. 1904! R. A. Phillips. 
Limerick—Sub-var. nigrescens, ¢ ‘astleconnell, 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. 
Mal. Soe. Belg., 1867). 
France—Var. marginella, in the Oise, Maine-et-Loire, and the Vosges, also 
about Vannes in Morbihan, and Chirac in Lozére. Sub-var. griseo- marginata, in the 
wood of Mont-Saxonnet, Sav oy, 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 neishbourhood 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. swammerdamii is recorded by Kaleniezenko as found about 
Sumy in Kharkov, but the record is said by Simroth to be erroneous. 
Var. maculata Dum. & Mort., Cat. Moll. Savoie, 1857, p. 5 
Arion (Limax) rufus var. maculatus Dum. & Mort., op. cit. 
ANIMAL with shield maculated with black. 
France—Savoy (Dum. & Mort., op. cit.). 
Monst. sinistrorsum ‘Taylor. 
ANIMAL with respiratory and other orifices on the left side of the body. 
France—A single specimen of the var. rufa found in the wood at Mérard, depart- 
ment of the Oise (Baudon, Journ. de Conch., 1884, p. 196). 
Geographical Distribution.—Arion 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 fr equently 
confused ‘by various writers. 
