Plate 111. 



Vertical sections thron,tjh the sphincter muscles. In the figs, i — 3, 5 the distal part of the sphincter is 



turned ujswards, in the figs- 4 and 6 downwards. 

 Fig. I of Epizoantlnis abyssorum ^/'^ ^ 



— 2 - — bcerenislandicus 4/,. 



— 3 - — jiorvegicus (from Skarnsound) ^/j. 



— 4 - — roseus ^/j. 



— 5 - hozoanth^is arhorcscciis (from Ingolf Exp. St. 97) 4/^. 



— 6 - Parazoiuitlnis haddoiii (from N. W. of Bergen, Matt son 1880 ^/j]. 



' Magnifications refer to Reichert's sj-steni "Austria". Figures ilrawn on the level of the microscope's foot. 



