HYGROMIA FUSGA. dl 
Abbé Dupuy has observed that this species is more especially maritime 
in habit, and remarked that the finest specimens are always found in the 
vicinity of the coast, the shells gradually becoming smaller and rarer in 
proportion as the inhabited district is removed from maritime influence. 
The var. alba alluded to in the Journal of Conchology, vol. ix., p. 110, 
as found at Worth Wood, Ramsor, Staffs., would appear to be an error, but 
it may be remarked that Colonel Montagu alludes to a “beautifully white 
and pellucid shell,” sent to him from Scotland by Mr. H. Boys, ‘in every 
respect like H. fusca except in colour,” though Dr. Jeffreys, who made a 
special examination of the type shells in Montagu’s collection now preserved 
in the Exeter Museum, states that the Scotch specimen above mentioned 
is really referable to the species now known as H. cartusiana. 
Var. vitrea Farrer, Journ. of Conch., vii., p. 157, Jan. 1896. 
SHELL pale glassy-green, animal pure white except the tentacular retractors. 
Only as yet recorded from few localities. ENGLAND. 
York N.E.—Forge Valley, Scarborough (J. A. Hargreaves, J. of C., xii., p. 302). 
Northumb. S.—Cockshot Hill, Stocksfield-on-Tyne, Aug. 1883 ! H. Richardson. 
Cumberland—Not uncommon with the type form, Park Woods, Bassenthwaite 
(Farrer, l.c.). IRELAND. 
Wicklow—Abundant with type, Powerscourt demesne, Enniskerry, Aug. 1904, 
P. H. Grierson. 
Kerry—Abundant with type on ‘‘flags” near Aghadoe, Sept. 1898 (Stubbs and 
Adams, Irish Nat., 1898, p. 262). 
Fic. 76.—Geographical Distribution of Hygromia fusca (Montagu). 
Probable Range bee Recorded Distribution 
Geographical Distribution.—Hygromia fusca, as far as at present 
recorded, is quite occidental in its range, and is scarcely known from 
Eastern Europe or elsewhere, probably passed over as the immature state 
of some of the larger species, so that this apparently limited distribution 
may be due in some measure to oversight and misapprehension. 
This is a striking example of a recessive or retreating species, the 
recorded and also the verified occurrences showing its apparent absence 
from the south-eastern counties of England, and its increasing abundance 
as it recedes from the probable point of entry of superior life. In the 
north of Scotland it is the most generally distributed of the Hygromie. 
