Or 
NOTES ON SOME DANISH MOLLUSCA. 
HANS SCHLESCH. 
Hellerup, Denmark. 


Helix (Helicella) candicans Ziegler, and Helix (Theba) 
carthusiana Muller, in Denmark. 
SoME time ago, Mr. Niels Petersen, of Copenhagen, who for 
several years has assisted me in the collecting of mollusca, 
sent me a small box containing living examples of land-shells 
found near the fortress of Jaegersborg near Copenhagen. 
To my great pleasure they proved to be Helix candicans and 
H. carthusiana, which have not hitherto been found in Den- 
mark. Both these species may be seen in my collection in 
the Hull Museum. 
Helix (Helicella) candicans Ziegler, varies considerably 
in size, form and colour. The variety anomala of Wester- 
lund is very common, while the variety usta of Held is rarer. 
A Swedish malacologist, Mr. Harald Muckardt, found a 
single specimen in 1907, at Helsingborg (Scania), in Sweden, 
and it was noted more than fifty years ago by Dr. Poulsen 
and Von Martens near Frederiksvaern in Norway. Mr. 
Muckardt believes it is carried with foreign turnip seed. 
Helix (Theba) carthusiana Miller occurred in two forms, 
the type and the variety minor of Westerlund. This find is 
very interesting, as it has not hitherto been recorded from 
Scandinavia. Even in Germany this characteristic South- 
European species is found only in few places, invariably on 
chalky soil. According to Clessin, the species lives only in 
climates which are softened by the gulf-stream. This 
explains its occurrence in Great Britain. 
: Oo: 


Pupa arctica Wallenberg.—Since my note on the dis- 
tribution of Pupa arctica Wallb.,* I have learned that this 
arctic species is found in the Val d’Hérens (Valois), in Switzer- 
land, at an elevation of 1700 m., and in the Sudeten at an 
elevation of 1600 m.t Mr. Plaget says that it also occurs in 
the Faroe Islands, but it is not yet recorded for this locality, 
though it might very possibly live there as well as at high 
altitudes in the British Isles—HAns ScHLeEscH, Hellerup, 
Denmark. 

* The Naturalist, Aug. 1914. 
+ Plaget ‘Un Mollusque Arctique habitant les Alpes Suisses,’ Feuzlle 
des jeunes Naturalistes, Jan. 1914. 
1916 Feb. 1. 
