Diclidophora minor (Olsson, 1868) in the shape of separate, nmore or less 

 synnnnetrical and different parts. During verification on our own actual 

 material, the identity of which to the material of Gallien does not occasion 

 any doubt, it was found that even in this, the smallest form of 

 Diclidophora the structure of the clamps is typical for the present genus. 

 The structure of the clamps in the genus Cyclobothrium is not clear. Thus, 

 judging by the drawings and the descriptions of Goto (Goto, 1894), C^ 

 sessilis Goto has clamps arranged exactly according to the same principle 



O.tMM 



F f 



Fig, 306. Diclidophora denticulata (Olsson) attaching clamp from an adult 

 worm from the gills of Pollachius virens (L. ) from the Barents Sea; 

 I--Chitinous parts of the attaching clamp in natural position; II--Chitinous 

 parts of the attaching clamp cut into and unfolded; on the top is the anterior 

 valve on the bottonn is the posterior valve. Explanation in text. 



as in Diclidophoropsis, whereas Yamaguti (Yamaguti, 1938) represents the 

 clamp of this type as very similar to the type of Heterobothrium . At the 

 same time, according to the drawings of the author, the clamps in C. iniistii 

 Yamaguti and C. semicossyphi Yamaguti resemble the clamps of Choricotyle 

 more closely. In all probability the clamps of Cyclobothrium have an 

 asymmetric structure but nevertheless are closer than anything else to the 

 clamps of Diclidophoropsis. As regards the genus Echinopelma , according 

 to the description of the author the clamps of its representatives have a 

 structure close to the one of Choricotyle, but differing by the presence of 

 a special round plate lying close to the place of entrance of the cluster of 

 muscles. It is possible that this plate corresponds to the three -pointed 

 membrane of Heterobothrium . 



Finally, one can only say about the structure of the clamps of 

 Pedocotyle that Price (Price, 1943a) indicates that they are similar to the 

 clamps of Choricotyle cynoscioni (MacCallum, 1917), i.e., they have in 

 this fashion an asymmetric structure. 



522 



