Medusae of the world . Fig. 279.—Liriope indica, after Bigelow, in Bull. Museum Comp. Zool. at Harvard 280.—Liriope scutigera, after Maas, in Ergeb. Plankton Expedition. and this develops into a free hydra that possesses a gelatinous umbrella. The free hydrabecomes converted into a medusa by the pushing inward of the peristome to form the sub-umbrella. The young medusa has 8 solid tentacles, 4 radial and 4 interradial. The 4 original,radial tentacles usually disappear, however, and are replaced by the 4 long, hollow, flexible,secondary tentacles that characterize the Fig.
Medusae of the world . Fig. 279.—Liriope indica, after Bigelow, in Bull. Museum Comp. Zool. at Harvard 280.—Liriope scutigera, after Maas, in Ergeb. Plankton Expedition. and this develops into a free hydra that possesses a gelatinous umbrella. The free hydrabecomes converted into a medusa by the pushing inward of the peristome to form the sub-umbrella. The young medusa has 8 solid tentacles, 4 radial and 4 interradial. The 4 original,radial tentacles usually disappear, however, and are replaced by the 4 long, hollow, flexible,secondary tentacles that characterize the Fig. 281.—Liriope minima, after Maas, in Ergeb. der Plankton and oral views of mature medusa. Liriope scutigera McCrady is specifically distinct from Liriope scutigera of A. Agassiz,1865, p. 60, fig. 87, and also from Liriope scutigera Fewkes, 1881 (Bull. Museum at Harvard College, vol. 8, p. 162, figs. 7, 10, plate 6). 34 424 MEDUSAE OF THE WORLD. Liriope minima minima, Maas, 1893, Ergeb. der Plankton Expedition, Bd. 2, , p. 37, taf. 2, fign. 8, 10; taf. 4, fign. I, 2. See synoptic table of species of Liriope. This tropical Atlantic form appears to be the smallest known Liriope, becoming maturewhen only 2 to 3 mm. wide. The gonads are large, double ovals on either side of the middleof each radial-canal. The peduncle is 4 to 6 times as long as the bell-radius. The spacebetween the gonads is only one-fourth to one-sixth as wide as each gonad itself. This formmay possibly be a starved medusa which has become sexually mature. (See fig. 281.) G
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcnidari, bookyear1910
