ARION CIRCUMSCRIPTUS. 239 
JW HVE 
This species, which under the names of Arion bourguignati, A. ambiguus and 
A. subcarinatus, would seem to be confined to the alpine and sub-alpine districts of 
Piedmont, ascending to an altitude of 6,000 feet in the Valley of Aosta. 
AUSTRO-HUNGARY. 
Herr Clessin says that though only known to occur in Austria, it probably also 
inhabits Hungary, Bohemia, Moravia, and Galicia. It has, however, been recorded 
by Hazay from Kotlina-Thal in Hungary, and as abundant at Graz in Styria by 
Dr. Simroth. There is little doubt that the Avion hortensis recorded by Bielz 
from Transylvania really belongs to the present species, of which country Simroth 
also indicates 1t as an inhabitant. 
SPAIN AND PORTUGAL. 
Spain—Avion hortensis is recorded by Prof. Hidalgo from various localities in 
Spain, but the figure cited as representing his species (Férussac, Hist. Moll., pl. 8a, 
f. 3) is Arion circunscriptus. 
BALKAN PENINSULA. 
Roumania—Dr. Simroth indicates that the inhabited area of this species 
embraces the range of the Carpathians on the frontier of Roumania. 
SCANDINAVIA. 
Norway—Westerlund reports that under the name of A. hortensis it has been 
recorded for many localities in South Norway. 
Sweden—Common at Ronneby in the province of Blekinge, found sparingly in 
the Island of Oeland, and extends up to 64° north latitude, or according to Simroth 
really extends as far north in Scandinavia as 69°. 
Denmark—Westerlund reports it as existing on Zealand and Jylland. 
RUSSIA. 
Extends into Finland as far as 60° 45’ north Jat. It is also recorded by Luther 
from Revel in Esthland, and according to Dr. Simroth extends eastward beyond 
Moscow to the Ural Mountains, and probably ranges well into Siberia. 
NEARCTIC REGION. 
New York—Abundant, Goat Island, Niagara Falls, May 1904, T. D. A. Cockerell. 
District of Columbia—Var. neustriaca, garden, Washington ; a prior owner of 
the garden was in the habit of importing plants from Europe (W. E. Collinge, 
Nantilus, May 1899, p. 9). 
Fic. 241.—Banks of River Lagan, Belvoir Park, Ulster, a haunt of Avion circymscriptus 
(photo. by Mr. R. Welch). 
