KUTATORIA • jgj 



DissotrocJia aculcata 1796 

 D. macrostyla 2048 

 DiiircUa sejiinctipcs 1874 



D. tigris c. 2000 

 Embata parasitica 2189 

 Epi plumes bracliioiius 1725 



E. senta 2093 

 Eosphora najas 2102 

 Eothinia elongata 2102 

 Euchlanis niacnira 2144 

 £. triquctra 2048 

 Floscularia mcUccrta 2100 



F. ringcns 2000 



Gas tr opus stylifcr 1920 



Habrotrocha angu-sticollis 2000 



/:/. bidetis 2100 



H. munda 2087 



Keratella cochlearis 2189 



7v. quadrata f. quadrata 2270 



K. serrulata 2189 



Lecane luna 2189 



Lc pad ell a ovalis 2000 



Maerotrachela multispinosa 1900 



Mniobia symbiotica 1950 



Mytilina mucronata spinigera 1782 



iW. j»wfica c. 2000 



M. ventralis breznspina 2200 



Notholca foliacea 2102 



Noiommata aurita 2189 



A'', pachyura 2102 



TV. /n>?Zf 2000 



Philodina roseola 2200 



P. wm.r 2000 



Pleurotroclia petromyzon 2000 



Proalcs decipieiis 2000 



Ptygura crystallina 2000 



Rhiiioglcna frontalis 1800 



Rotaria macrura c. 2000 



i?. jorfl^iWa 20000 



7?. tardigrada 1938 



Squatinclla inutica 2000 



Stcphanoceros fimbriatus 2144 



Tcstudinclla patina 2000 



Trichotria poeilliiin 1815 



Trichoccrca hui'^iseta ]<134 



r. ra.//;/.?2189 ' 



Zschokke (1900) in his analysis of his earlier list brings out clearly a limitation of 

 tlic number of species with increase in altitude, which limitation is supported by the later 

 list, given above. In the nival zone only muscicolous bdelloids occur, no rotifers being 

 recorded from the few lakes above 2700 m. that have been studied biologically in the Alps. 

 Nine species are, however, known to occur between 2600 and 2700 m. Zschokke gives a 



