hardly be accurate. It is understandable that this can be verified only in the 

 actual material, but if it be so then Vallisia should be ascribed to the present 

 family, but for the time being the doubt of the veracity of its belonging in 

 Anthocotylidae remains. Price (Price, 1943b) separates Vallisia into a 

 subfamily on the basis of its asymmetry, the presence of the testes in 

 front of the ovary, the number and the shape of the hooks of the attaching 

 disc. The considerations of Price are important; however, we do not 

 consider it possible to accept his opinion without the verification of the 

 actual material and we think it more justified to leave open the question about 

 the systematic separation of Vallisia, 



3. Family Plectanocotylidae Poche, 1925 



(Figs. 88, 302) 



Plectanocotylinae Monticelli, 1903; Mazocraeidae auct. 



Discocotylinea, having middle sizes. The attaching apparatus 

 consists of a disc weakly delimited from the body, bearing, among adult 

 forms., one pair of edge, 2 pairs of middle hooks, and 6-8 attaching clannps. 

 The hook armature is located on the posterior end of the disc transformed 

 into a more or less long linguaform outgrowth. The clamps possess a 

 complex chitinous capsule consisting of 6-7 basic parts connected with each 

 other in movable fashion. The eyes are absent (the larvae probably have 

 one double eye). The copulatory organ has chitinous armature in the 



shape of a long cluster of needles. The testes are numerous and are 

 situated either only behind the ovary or also in front of it. The vaginal 

 ducts are absent. The other characteristics are similar to the ones of 

 Mazocraeidae . 



Parasites of marine Perciformes (Triglidae, Serranidae, 

 Carangidae, Trichiuridae). 



Type genus, Plectanocotyle Diesing, 1850. 



In addition to the type genus, Octoplectanocotyle Yama.guti, 

 1937 and Vallisicpsis Subhapradha, 1951 are also ascribed here. 



Monticelli (Monticelli, 1903) first established the special sub- 

 family Plectanocotylinae into which he included 2 genera, Plectaiiocotyle 

 Diesing and Phyllocotyle Beneden and Hesse, the latter genus was later 

 made synonyraous with the first. This subfamily was ascribed by Monticelli 

 to the family Hexacotylidae,also established by nim. Inasmuch as Hexacotyle 

 ( = Dipiobot'irium in the same work of Monticelli, =Hexostoma according to 

 contemporary nomenclature) clearly has nothing in common with Plectanocotyle, 

 Poche (Poche, 1925) established a new family Plectanocotyliaae indicating 



513 



