ARION SUBFUSCUS. 203 
; : E ’ CONTINENTAL DISTRIBUTION. 
Germany—Sub-var. campestris, Neu Brisach, Alsace. Sub-var. bettgeri, Bremen 
(Pollonera, Arionide Rég. Palearct., 1890, p. 13). Sub-var. citrina, Misdroy, Wollin 
Island, Pomerania (Babor, J. of Mal., 1894, p. 45). 
France-—In the elevated mountain woods of Puy-de-Dome and Cantal (Bouillet, 
l.e.). Sub-var. mabilliana, in the Forest d’Orient in the Aube. Sub-var. aurantiaca, 
Savoy (Dumont & Mortillet, op. cit.). Sub-var. nigricans, on mushrooms, chiefly in 
October, in the Forest of Hez, department of the Oise ; and Drouet has also found it 
at Dijon, Cote @Or. Sub-var. atripunctata, Mont Saxonnet, Savoy, at an alt. of 
over 3,000 feet (Dum. & Mott., op. cit.).  Sub-var. campestris, Bellancourt and 
Sévres, Seine. Sub-var. bavayi, Brest in Finistere. 
Switzerland—Sub-var. campestris, St. Gall (Westerlund, op. cit. ). 
Italy—Sub-var. atiripunctata, on the Alps, also Piano di Formazza, Piedmont 
(Pollonera, Arionidze Reg. Paléarct., 1890, p. 13). 
Norway—Elvanaes and Jarfjord (Esmark & Hoyer, Mal. Bl., 1886, p. 103). Sub- 
vars. citring and fava, Ringerige (Westerlund, 1.c.). 
Sweden—Sub-var. /ewvis, Krokum in Jemtland. Sub-var. edtrina, Ofvedskloster 
in Scania, and in Blekinge. Sub-var. flava, Esperod in Scania, rarely in Smaland, 
and in Blekinge (Westerlund, 1.c.). 
Denmark—Sub-var. flava, Copenhagen (Westerlund, l.c.). 
Russia—Sub-var. Arynichii, in moist woodlands near Lvanovka in Sumy district. 
Frequent in rainy weather by woodland roads, on Morchellw, near Danilovka-Parva, 
Kuryseh, and Kvitkin in the district of Kharkov (Kaleniczenko, 1c. ). 
Var. pegorarii Less. & Poll., Mon. Limac. [tal., 1882, p. 62. 
Arion pegorarii Less. & Poll., op. cit. 
Arion stabilet Pollonera, Elencho Moll. Terr. Piem., 1885, p. 28. 
Avion pollonere Pini, Nov. Malac., 1884, p. 42. 
Arion subfuscus var. transylvanus Simroth, Zeitschr. Wissensch. Zool., 1885, p. 284. 
Arion subfuscus var. alpestris Pollonera, Arionide Rég. Paléarct., 1890, p. 12. 
ANIMAL quadrifasciate, showing dark subdorsal and lateral banding on each side. 
The var. pegorarii s.str., is dusky rufous, confusedly quadrifasciate; foot-fringe 
dark grey, with black lineolations ; sole whitish and mucus yellow. According to 
Pollonera, this form is also distinguished from the typical form by the presence of 
an additional ectocone to the marginal teeth. 
The sub-var. stabilei is described as yellowish or orange, confusedly quadri- 
fasciate ; foot-fringe with black lineolations. 
The sub-var. pollonerse grows to a larger size (80 mill.) and is confusedly quad- 
rifasciate, with pale yellow fringe, and conspicuous lineolation. 
The snb-var. transylvana is very darkly coloured and quadrifasciate. 
The sub-var. alpestris is yellow or orange ; dorsum more or less chestnut or 
fuscous-black ; fascia blackish or chestnut coloured ; fringe yellow, lineolate with 
fuscous. 
CONTINENTAL DISTRIBUTION. 
Germany—Sub-var. a/pestris (Pollonera, op. cit.). 
France—Sub-var. «/pestris, north of France (Pollonera, op. cit.). 
Italy—Etrouble, valley of Aosta, Piedmont. Sub-var. pollonere, Intra on Lake 
Maggiore, Piedmont. Sub-var. a/pestris, Alps; sub-var. stabilei, Maccugnaga, Pied- 
mont (Pollonera, op. cit.). 
Austro-Hungary—Sub-var. transulvana, Transylvania (Simroth, l.c.). 
Sweden—Malm records a quadrifasciate variety from Lulea-Lappmark, which 
would perhaps be best placed under pegorari. 
Geographical Distribution.— Arion sub/uscus has a more extended 
distribution than A. ater, as, in either its typical or in its aberrant forms its 
range extends on all sides beyond that of the latter species, forming as it 
were a fringe beyond the inhabited area of its congener. 
The distributional area comprises almost the whole of Europe, except the 
south-eastern extremity, where Arionidw are practically deficient. 
It is recorded as inhabiting the British Isles, Germany, France, Belgium, 
Spain, Portugal, Switzerland, Northern Italy, Austro-Hungary, Russia, 
