As regards the internal organization of Capsalidae.its common ' 



schenne is very close among all the subfamilies. The basic differences ! 



which are of great significance can be reduced to certain peculiarities of 

 structure of the sex and digestive systems. As a matter of fact, it is 

 probable that Monticelli (Monticelli, 1891) was also right when he con- 

 sidered the structure of the head lobe of Capsalidae as important, but this 

 question demands special restudy because no one has studied this family 

 in this connection since his work. 



The reconstruction of the system of the family which is presented 

 by us in the present work is very prelinninary, and must be defined nnore 

 exactly. 



1. Family Capsalinae Johnston, 1929 



(Figs. 1, 4, 35, 57, 58, 76, 95, 101, F, 278, A, 314) 



Tristominae Braun, 1893; Tristomatinae Gamble, 1896. 



Capsalidae having an attaching disc with a central depression 

 and 7 peripheral ones delimited from each other by powerful muscular septa, p. 376 

 There is either one pair of middle hooks or they are completely absent. 

 The anterior end has a well-developed cephalic lobe and 2 lateral suckers. 

 The intestinal trunks merge terminally, forming an intestinal ring. The 

 ovary is lobed. The testes are numerous. 



Parasites of marine fishes, basically Scombroidei (including 

 Thunnidae). 



Type genus, Capsala Bosc, 1811. 



Capsaloldes Price, 1938, and Tristoma Cuvier, 1817 also belong to the 

 same subfamily. 



The systematics of the subfamily were studied by Johnston, (Johnston, 

 1929) and Price (Price, 1939); however, it demands further substantial revision. 

 Basically, at the present time the structure of the effering ducts of the sex system 

 as well as the existence of dorsolateral chitinous thorns, which exist only in the present 

 group (see page 43), Is taken Into consideration but little. Both of these systems of 

 Indicative signs are without any doubt strictly specific and must be of great systematic 

 significance. The attribution of species to a particular genus Is also conditional at 

 the present time. Thus, according to Price (Price, 1939) and Sproston (Sproston, 1946), 

 "Trlstomum" follaceum Goto, 1894 pertains to the genus Capsala although the distri- 

 bution of the testes in this form does not fit the diagnosis of this genus, etc. 



448 



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