— 73 — 



Euchlanis dilatata, Ehrbg. 

 Callidina elegans, Ehrbg. 

 Daphnia pennata, 0. F. Müll. 

 Alona affinis, Leycl. 

 Pleuroxus excisus, Fisch. 

 Acroperus leucocephalus, Roch. 

 Chyclorus sphaericus, 0. F. Müll. 

 Candoiia Candida, 0. F. Müll. 

 Cyclops streiiiius, Fisch. 

 Diaptomus bacillifer, Kölbel. 

 Hydrachnidenlarven, sechsfüssig. 

 Nemura variegata^ Oliv. 

 Limnophilus spec. 

 Chirononius spec. 

 Culex spec. 



Pisidium ovatnm, Cless. 

 19 Pisidium fossarinum, Cless. 



8. Unterer See von Drônaz 

 (Combe de Drônaz N. vom St. Bernhard). 



Höhe c. 2570 m. üb. Meer. Länge c. 150 m. Breite c. 100 m. 

 8. Aug. 1 h. p. m. Temperatur 12,5*^ C. 



Planaria alpina, Dana. 

 Euchlanis dilatata, Ehrbg. 

 Daphnia longispina^ Lejd. 

 Alona affinis; Leyd. 

 Pleuroxus excisus, Fisch. 

 Chydorus sphaericus, 0. F. Müller. 

 Cyclops strenuus, Fisch. 

 Diaptomus bacillifer, Kölbel. 

 Limnophilus spec. 

 Chiron omus spec. 

 11 Pisidium ovatum, Cless. 



