244 



BIOLOGY OF THE SEAS OF THE U.S.S.R. 



Barents Sea forms through that passage is felt even along the western shores 

 of Yamal. Such warm- water forms as Orchomenella nana, Tryphosa hoerringi, 

 Hyas araneus, Eupagurus pubescens, Mytilus edulis, Solaster endeca, Cucu- 

 maria frondosa, cod, haddock and others have been found on the Kara Sea 



Fig. 104.£Main ways of penetration into the Kara Sea of benthos of 

 different biogeographical nature (according to different workers). 1 

 Forms of the intermediate warm layer and of the cold deep layers; 

 2 Northern boundary of forms brought down by the discharge from the 

 mainland ; 3 Sublittoral deep-water forms and those of the Barents Sea 

 (marked by circles). 



side in immediate proximity to the Kara Gates. The latter have a purely 

 Barents Sea fauna. 



Many typical members of the Kara Sea fauna such as Synidothea bicuspida, 

 S. nodulosa, Mesidothea sabini, M. sibirica, Lembos arcticus, Paramphithoe 

 polyacantha, Melita formosa and others penetrate through Yugor Shar from 

 east to west into the Pechora region of the Barents Sea. No immigration to the 

 west through the Kara Gates has been observed. 



