FAUNA DER ISL. LAND- UND SUSSYVASSER-MOLLUSKEN. 193 
W. 
s. 
0 . 
N. 
Limnaea peregra Muller 
+ 
+ 
0 
+ 
— — var. geisericola [Beck. | . . 
+ 
+ 
0 
4 - 
— var. albina 
+ 
— — var. ovata Drap 
-f 
+ 
+ 
0 
— — var. Steenstrupii Cless. . 
+ 
— — var fontinalis Studer . . 
+ 
0 
0 
4 - 
— — var. Piniana Hazay . . . 
0 
0 
+ 
— — var. microcephala Kuster 
4 ' 
— — var. Sikesii Preston . . . 
+ 
— — var. lacustrina Cless. . . 
+ 
truncatula (Muller) . 
+ 
+ 
0 
4 - 
— f. gracilis Morch .... 
+ 
+ 
Planorbis leucostoma Mill 
+ 
— spirorhis [Linné] ; . . . 
-f 
glaber Jeffreys 
— arcticus [Beck] 
O 
0 
0 
4 - 
Pisidium amnicum Muller 
O 
0 
0 
+ 
— pulchellum Jenyns ........... 
+ 
— nitidum Jenyns 
— — var. Feddersenii W. . . . 
subtruncatum Malm ........ 
4 - 
— Lilljeborgii Cless in 
H - 
+ 
— Scholtzii Cless in 
~h 
— pusillum [Gmei.in] 
-f 
casertanum [Poli] 
+ 
— personatum Malm . 
+ 
— milium Held. ............ 
— fossarinum Clessin 
+ 
0 
0 
+ 
— — var. flavescens Cless . 
+ 
obtusale C. Pfeiffer 
+ 
+ 
— Steenbuchii 
0 
+ 
0 
Margaritana niargaritifera [Linné] 
? 
Nyt Mag. f. Naturv. LV. 1917. 13 
