ESMARK : MOLLUSCA OF NORWAY. II7 



bulged, and the mouth egg-shaped above at an acute 

 angle ; others have it oval or angled-oval, reminding us of 

 forms of L. peregra var. curia. 



The second year I found mostly biennial animals, 

 and I am inclined to think they have had much more 

 food, as the last whorl suddenly was more expanded with 

 the suture ascending as in lagotis, the striae coarser, mouth 

 egg-shaped, spire variable in height. At present I must 

 put it down as ovafa, without deciding it as any variety 

 before I have got more collections from the same place, 

 hoping later to find a constant form. At Lomtjem in Kvikne, 

 40 kilometers farther north and 700 metres altitude, I 

 found a Limngea, which also must be ranged under ovata. 

 In some the spire is higher than in the typical form, and 

 gradually gets shorter, and at last it resembles var. patula ; 

 whorls very convex, the most of them horizontal under the 

 suture, in which it is like the preceeding, but is separated 

 from this by the last whorl, being much more bulging, mouth 

 much larger, and the outer lip reflected. 



G. ovata var. colletti Hoyer. Laxcelv in Porsangerfj ord in 

 the Amt of Finmarken. 



C ovata var. patula Da Costa. Toten near Mjosen, Vaale 

 in Jarlsberg, and Oxfjord, in the Amt of Finmarken. 



L. mucronata Held. Vardo, in the Amt of Finmarken. 

 Subgenus LIMNOPHYSA Fitz. 



L. palustris Miill. Not common. Bdrseso near Skien, 

 Maalselven, in the Amt of Tromso ; Pasvikelven, in the 

 Amt of Finmarken. 



L. palustris var. septentrionalis Cles. CEstensd, near 

 Christiania. 



L. palustris var. fusca. Bergen. 



L. peregra Miill. Very common in Christiania, Christian- 

 sand, and Hamar Stifts, and is found up to Varangerfjord, 

 m the Amt of Finmarken, and belongs to the circumpolar 

 species. At the Zoological Museum they have some shells 



