ofHydroidsfrora the White Sea. 



^^' 2Xn {Thecaphora, &c.) 



227 



Hydra ^'\/ 



Clavatella ^ i ^ 

 Prolifera ^q^ 



V/ 



Larida9 

 (6-4). 



Cladonema 



radiatmn 



(2X5). 



f (2X2). 



•6 ^fonobrachiidEB 



( (4-3;. 



. O ^ Atractylis hUmtaculata, Wv 



*^ ^'-^iohydra Leuckarlii, Qr 



16* 



