“…Discussion.-These trematodes agree well -with those reported from Parayithias furcifer, a "small mackerel," and Angelichthys sp., from the Mexican coast and the Galapagos Islands (Manter, 1940 Manter, 1940 caducum (Looss, 1901) Manter, 1934 califomicum (p. 328), new species casum (Linton, 1910) McFarlane, 1936 cesticilhmi (Molin, 1858) Looss, 1899 (type species) cloacum (Srivastava, 1938), new combination ; synonym Echinostephanus cloacum Srivastava, 1938coryphaenae Manter, 1947 dentatum (Linton, 1900) Manter, 1931 ditrematis (Yamaguti, 1939) Manter, 1947elongatum (Park, 1939 Hanson, 1950 fistulariae (Yamaguti, 1940) new combination; (synonym Echinostephanus fistulariae Yamaguti, 1940) hispidum (Yamaguti, 1934) Manter, 1940 imparispine (Linton, 1905) Manter, 1940japonicum (Yamaguti, 1934, new combination; (synonym Stephanochasmus japonicus Yamaguti, 1934) lineatum Manter, 1934tnegacephalum Manter, 1940 micro stephanum Manter, 1934 minutum (Looss, 1901) Manter, 1940multispinosum Manter, 1940 pristis (Deslongchamps, 1824) Looss, 1899 proviicropsi Manter, 1947rhombispinosum (Labour, 1908 Manter, 1934 senium (Linton, 1910) Manter, 1947 tenue (Linton, 1898) (1938). S. cesticillum has eggs 80a by 50 to 55/x, an oral sucker only slightly smaller than the acetabulum, and a cirrus sac extending more than halfway to the ovary, a conspicuous metraterm, and its oral spines are at least usually interrupted ventrally by a spine lacking or by small spines.…”