2(}i) Miscellaneous. 



snow-water. The surface is frozen over in the first half of November 

 to open again at the beginning of June. 



Animal inhabitants: — Vorticella microstoma, Ehr. ; Planaria 

 abscissa, Ijima ; P. suhtentaculata, Duges ; Dorylaimus stagnalis, 

 Duj. ; Scenuris varieqata, Hoffm. ; Lumhriculus variegatus, 0. F. 

 Miill. ; Lynceus quadrangularis, 0. F. Mull. ; L. spha'ricus, 0. F. 

 Mull. ; Cypris compressa, Baird; Cyclops tenuicornis, Claus ; C. elon- 

 gatus, Claus ; Hygrobates longipalpis, Konicke ; Limneria histrionica, 

 Bruz. ; Pachygaster tau-insignitus, Lebert ; Oirrhenurus spec, Dug. ; 

 Rhyacophila vulgaris, Pict. ; Chironomus plumosus, Linn. ; Ohiro- 

 nomus, 5 sp., Meig. ; Tipula sp., Meig. ; Gorethra sp., Meig. ; 

 Pisidium fossarinum, Cless. ; P. Foreli, Cless. ; Limncea truncatula, 

 Miill. ; L. ventricosa, Moq.-Tand. ; Cottus gobio, Linn. ; Phoxinus 

 Icevis, Ag. ; Rana temporaria, Linn. : Triton alpestris, Laur. 



b. Lake of Tilisuna : elevation 2100 metres ; length 270, breadth 

 150, depth 15 metres; temperature lt°-12 :> C. The lake lies more 

 open than that of Partnun, partly in Bundnerschiet'er, partly in 

 crystalline rock. The subsoil is composed chiefly of coarse pebbles. 

 Vegetation in the water inconsiderable, on the bank tolerably 

 luxuriant. This basin also receives a great influx of snow-water. 

 The periods of freezing and breaking-up agree nearly with those of 

 the Partnun lake. 



Animal inhabitants: — Vorticella microstoma, Ehr. ; Planaria 

 polychroa, O. Schm. : Dorylaimus stagnalis, -Dnj. ; Samuris variegata, 

 Hoft'm. ; Lynceus quadrangularis, 0. F. Miill. ; L. acanthocercoides, 

 Fisch. ; Cypris compressa, Baird ; Phryganea pilosa, Oliv. ; Hydro- 

 porus piceus, Heer ; Chironomus plumosus, Linn.; CMronomus sp., 

 Meig. : Pisidium nitidum, Jenyns ; Limncea truncatula, Miill. ; Fre- 

 dericella sultana, Gerv. ; Cottus gobio, Linn. ; Phoocinus la;vis, Ag. ; 

 Rana temporaria, Linn. 



c. Lake of OarscJiina : elevation 2189 metres ; length 200, 

 breadth 100, depth 3 metres ; temperature 15°-16° C. It lies quite 

 open in the midst of fine Alpine meadows. Its bottom consists of 

 fine mud ; the surrounding rock is a Biinduerschiefer, rich in 

 Fucoids. Algal vegetation much developed in the lake. The 

 influx of snow-water ceases entirely in the summer ; the basin is 

 then fed only by springs. The ice-covering breaks up only at the 

 end of June. 



Animal inhabitants : — Epist ylis plicatilis, Ehr. ; Vorticella micro- 

 stoma, Ehr. ; Calidina parasitica, Gigl. ; Microstoma lineare, Oerst. ; 

 Planaria (d)scissa, Ijima ; Polycelis nigra, O. F. Miill. ; Dorylaimus 

 stagnalis, Duj. ; Clepsine biocidata, Sav. ; C. marginata, Sav. ; 

 Samuris variegata, Hoffm. ; Lumhriculus pellucidiis, Dupel ; Lyn- 

 ceus quadrangularis, O. F. Miill. ; Cypris compressa, Baird ; Cyclops 

 srrulatus, Fisch. ; Diaptonus castor, Jur. ; Gammarus pxdex, Linn. ; 

 Liutuesia histrionica, Bruz. ; Pachygaster tau-insignitus, Lebert ; 

 Perla alpina, Pict. ; Cloe sp., Pict. ; Sialis lutaria, Linn. ; Phry- 

 ganea varia, Fab. ; P. pilosa, Oliv. ; P. ruficollis, Pict. ; Notonecta 

 lutea, Miill. ; Hydroporus nivalis, Heer ; H. erythrocephalus, Heer ; 

 Chironomus, 4 sp., Meig.: Gorethra sp., Meig.: Pisidium fossa- 



