Thunnus obesus (Continued) 



Caballerocotyla pseudomagronum Bussieras 1972. Tropical eastern 

 Atlantic. Buccal cavity. Bussieras (1972). 



GASTROCOTYLIDAE 



Areotestis sibi Yamaguti 1965. Hawaii. Gills. Yamaguti (1968b). 



HEXOSTOMATIDAE 



Hexostoma grossum (Goto 1894) Sproston 1946. Central Pacific. 



Gills. Iverson and Hoven (1958); Japan. Ishii and Sawada (1938) 

 Hexostoma acutum (Goto 1894) Sproston 1946. Japan. Gills. 



Price (1961a). 

 Hexostoma sibi Yamaguti 1968. Hawaii. Yamaguti (1968b). 

 Neohexostoma robustum Price 1961. Tropical Pacific. Gills. 



Price (1961aT7^ 



Thunnus thynnus - Bluefin Tuna 



SYNONYMS - Orcynchus thunnus , Scomber thunnus , 

 Thunnus oriental is , Thunnus sal iens 



ACANTHOCEPHALA 



ECHINORHYNCHIDAE 



Neorhadinorhynchus nudus (Harada 1938) Yamaguti 1939. South 

 China Sea. Intestine. Mamaev (1968b) as Echinorhynchus n. 



POLYMORPHIDAE 



Bolbosoma thunni Harada 1935. Japan. Intestine. Harada (1935). 



CESTODA 



DASYRHYNCHIDAE 



Callitetrarhynchus gracilis (Rudolphi 1819) Pintner 1931. 

 Plerocercoid. South China Sea. Intestine, liver. Mamaev 

 (1968b); Mediterranean. Dollfus (1942); Massachusetts. Linton 

 (1924) as Rhynchobothrium speciosum . 



LACISTORHYNCHIDAE 



Lacistorhynchus tenuis (Van Beneden 1858) Dollfus 1929. Larva. 

 Massachusetts. Intestine. Linton (1924) as Rhynchobothrium b. 



PHYLLOBOTHRIIDAE 



Phyllobothrium caudatum (Zschokke and Heitz 1914). Larva. 

 Pacific coast of Japan. Yamaguti (1959b) as Pelichnibothrium 

 speciosum . 



285 



