The Research Bulletin of the Meguro Parasitological Museum No. 4 (September 1970)

• CONTENTS
  
  
  • Three new digenetic trematodes: Pseudopalaeorchis elongatus n. g., n. sp., Hurleytrematoides japonicus n. sp. and Lasiotocus baiosomus n. sp. (Monorchidae Odhner, 1911) from marine fishes of Tsushima Island, Sea of Japan.
    Sh. Kamegai ----- pp. 1-10
    
    Three new monorchids, including a new genus, are described from the intestines of marine fishes caught near Tsushima Island, Sea of Japan. Pseudopalaeorchis elongatus n. g., n. sp. (Asymphylodorinae Szidat, 1943) from Monocentris japonicus is characterized by its body shape, vitellaria being divided into pre- and postovarian groups, and the structure of the terminal genitalia. Hurleytrematoides japonicus n. sp. (Postmonorcheidinae Yamaguti, 1958) from Chaetodontoplus septentrionalis differs from all other known members of Hurleytrematoides by its large body size, the shape of the cirrus pouch and the genital pore being located at the submedian postacetabular level. Lasiotocus baiosomus n. sp. (Lasiotocinae Yamaguti, 1958) from Hemiramphus sajori differs from the most closely related species L. minutus and L. parvus by its longer caeca, the shape of ovary and the egg size.
    
    
  • A new digenetic trematode Cladolecithotrema callionymi n. g., n. sp. (Hemiuridae) of marine fishes from Sagami Bay.
    A. Ichihara ----- pp. 11-14
    
    A new hemiurid, Cladolecithotrema callionymi n. g., n. sp. belonging to Trifoliovariinae Yamaguti, 1958 is described from the rectums of marine fishes, Callionymus lunatus, C. flagris (?) and Calliurichthys japonicus from Sagami Bay. It is characterized by seminal vesicle being entirely preacetabular, having stomach portion, four-lobed ovary, vitellaria being branched, absence of Laurer's canal.
    
    
  • Studies on the genus Decemtestis Yamaguti, 1934. Allodecemtestis n. gen., for Decemtestis biacetabulata Srivastava, 1936.
    M. Hafeezullah ----- pp. 15-19
    
    Intraspecific variation in Decemtestis Yamaguti, 1934 are discussed on the basis of specimens of two Indian and one Korean species of the genus reported here from new hosts and new localities. Indian species are: D. mehral Srivastava, 1936 and D. brevicirrus Srivastava, 1936, and the Korean species is D. kobayashii Park, 1939. A new genus Allodecemtestis is proposed for D. biacetabulata Srivastava, 1936 and D. pseudolabri Manter, 1954. Consequently, these two species become Allodecemtestis biacetabulata n. comb., and A. pseudolabri n. comb.
    
    
  • Further studies on the differnces in susceptibility of four strains of inbred mice to infection with Schistosoma japonucum.
    K. Yoshimura, Y. Hishinuma & M. Sato ----- pp. 21-25
    
    This study was conducted to investigate the susceptibility of 4 strains (AKR, CF#1, C3H/He and KK) of inbred mice to infection with Schistosoma japonucum. The worm recovery was highest in KK strain (50%), followed by C3H/He (42%), AKR (42%) and CF#1 (38%) respectively. The worm burden of the females of strain KK was significantly higher than that of the males. The worm maturity was highest in AKR strain (98.1%) and lowest (89.9%) in the KK strain.
    
    
• RESEARCH NOTE
  
  
  • An abnormal shape of reproductive organs of Diplozoon nipponicum Goto, 1891 from an old carp at Lake Kasumigaura, Japan.
    Sa. Kamegai ----- p. 20