14 LÖNNBERG, THE BIOLOGY OF THE CASPIAN SEA. 



Stat. 1. i8/4_ 470 5;l' E. long. (Greenw.), 45= 7' N. lat. 



Temperature of the water at the surface + 12'. 6 C; tem- 

 perature of the air + 16"" C. The water was almost quite fresh, 

 but dirty. The plankton consisted only of green globulous algee. 



Stat. 2. 48=36' E. long. (Greenw), 44° 49' N. lat. 



8 sashen depth, temperature at surface + 8°. 7 C, at the 

 bottom 7°. 6 C. The bottom material consisted mostly of white 

 Shells, not mixed Avith mud, so the dredge was quite clean when 

 it Avas taken up. The coloration of the crustacea (Mysis and 

 Gammarids) could be regarded as an adaptation to that of the 

 bottom. Their coloration was, namely, as a rule, whitish spotted 

 with grey and brown, a polychfet living hidden was red. 



Stat. 3. 20/4. 50° 7' E. long. (Geenw.), 44° 58' N. lat. 



Temperature at the surface + 12° C, at the bottom + 10° C. 

 Dept 16 feet, shells and clay. Sorae gobies were caught in the 

 dredge. Red larvse of CTiironomus were common. Dreyssena 

 was scarce, only found in small specimens attached to shells of 

 Cardium. Caspia and Neritina represented the Gastropods. 

 Gammarids and Corophiums Avere rather numerous. Ampliicteis 

 and an oligochset were also observed. 



(From the station numbered 4 I have no collections and it 

 is therefore omitted in this list.) 



Stat. 5. 23/4. 50° 38' E. long. (Greenw.), 45° 5' N. lat. 



Temperature at the surface + 14°. 5 C, at the bottom 

 + 14°. 4 C. Depth 14 feet, bottom material: dead shells and 

 pieces of dead plants imbedded in clayey mud. 



Small specimens of Neritina, mostly dead shells. Adacna, 

 both species were rather common and the Cumacea Avere 

 numerous. 



Stat, 6. 50° 44' E. long. (Greenw.), 45° 6' N. lat. 



Temperature at the surface + 16° C, at the bottom 15°. 3 C. 

 Depth 19 feet. Bottom-material: shells and mud. Species of 

 Coo'ophium and Adacna were typical animals of this place. 

 Larvas of Chironomiis, and Ampliicteis Avere also found. 

 ') 1 sashen = 2 meter 13 cm. 



