Medusae of the world . Fig. 204.—Dipelasus digonimus, after Haecke]. Fig. 205.—Pelasus atavus, after Haeckel, in Syst. der Medusen. Fig. 206.—Petasata eucope, after HaecUel, in Syst. der Medusen. 206. — 361 Subfamily PETASIN^ Haeckel, 1879 (in part). Petasidje (in part), Haeckel, 1879, Syst. der Medusen, p. 247.—Browne, 1904, Fauna and Geog. Maldive and LaccadiveArchipelagoes, vol. 2, p. 735.—Maas, 1905, Craspedoten Medusen der Siboga Expedition, Monog. 10, p. 45; 1906, FaunaArctica, Bd. 4, Lfg. 3, p. 488, Jena. SUBFAMILY CHARACTERS. Trachymedusae with 4 radial-canals up
Medusae of the world . Fig. 204.—Dipelasus digonimus, after Haecke]. Fig. 205.—Pelasus atavus, after Haeckel, in Syst. der Medusen. Fig. 206.—Petasata eucope, after HaecUel, in Syst. der Medusen. 206. — 361 Subfamily PETASIN^ Haeckel, 1879 (in part). Petasidje (in part), Haeckel, 1879, Syst. der Medusen, p. 247.—Browne, 1904, Fauna and Geog. Maldive and LaccadiveArchipelagoes, vol. 2, p. 735.—Maas, 1905, Craspedoten Medusen der Siboga Expedition, Monog. 10, p. 45; 1906, FaunaArctica, Bd. 4, Lfg. 3, p. 488, Jena. SUBFAMILY CHARACTERS. Trachymedusae with 4 radial-canals upon which the swollen, linear, or sac-like gonads aredeveloped. Tentacles without adhesive disks. This subfamily is separated from the Geryonidae by its sac-like protrusive gonads, whereasthe gonads of the Geryonidae are leaf-like expansions. It is distinguished from the very closelyallied Olindiadae by its simple tentacles, whereas the tentacles in the Olindiadae bear adhesivepads. A synopsis of the genera
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcnidari, bookyear1910
