Medusae of the world . tequal to bell-diameter. Stomachvery small,nearly spherical,4 widelance-like lips, with curved, foldededges, about a fourth as long asbell-diameter. F,G. ,,™ teuscheri, after Haeckel, ,879. Haeckel describes this Species from a single poorly preserved specimen found off the coast of Brazil in N. lat. 30, 250. Our account is a translation of his description. Family jEQUORIDjE Eschscholtz, 1829. Mquoridct (in part), Eschscholtz, 1829, Syst. der Acalephen, p. 108. Mquorida, Agassiz, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 359.—Agassiz, A., 1865, North Ame
Medusae of the world . tequal to bell-diameter. Stomachvery small,nearly spherical,4 widelance-like lips, with curved, foldededges, about a fourth as long asbell-diameter. F,G. ,,™ teuscheri, after Haeckel, ,879. Haeckel describes this Species from a single poorly preserved specimen found off the coast of Brazil in N. lat. 30, 250. Our account is a translation of his description. Family jEQUORIDjE Eschscholtz, 1829. Mquoridct (in part), Eschscholtz, 1829, Syst. der Acalephen, p. 108. Mquorida, Agassiz, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 359.—Agassiz, A., 1865, North American Acalepha, p. 95.— Haeckel, 1879, Syst. der Medusen, p. 207.—Maas, 1893, Ergeb. der Plankton Exped., , K. c, pp. 6, 7; 1904, Result. Camp. Sci. Prince de Monaco, fasc. 28, pp. 21-24; 9°5> Craspedoten Medusen der Siboga Exped., Monog. 10, p. 44. FAMILY CHARACTERS. Leptomedusae with lithocysts and with numerous (8 to 100 or more) simple or branchedradial-canals upon which the gonads are developed. 26. 320 OF THE WORLD. These medusae are probably derived from the Eucopidae through the multiplication of the4 primitive radial-canals. In their youngest stages, indeed, the medusae of the ^Equondaehave only 4 radial-canals, but these increase by the growing outward of new canals from thestomach-margin. Thus the medusa has at first 4, then 8, 16, 32, etc., radial-canals, althoughthis increase is usually irregular in its later stages. The medusae appear to develop throughalternations of generations from Campanularian hydroids, and asexual budding of daughtermedusae is unknown in the medusa stage of the iEquoridae. The medusae of the iEquoridae display a remarkable range of individual variability, bothof form and color—this being correlated with the multiplicity of their parts such as radial-canals, tentacles, gonads, lithocysts, lips, etc. This high degree of variability has caused muchconfusion in the synonymy, for new species have frequently been describ
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcnidari, bookyear1910
