Medusae of the world . 147- Fir,. 147.—Phialidium iridescens, after Maas, in Voyage S. Y. 148.—Phialidium brunescens, after Bigelow, in Bull. Museum Comp. Zool. at Harvard College. Phialidium brunescens, Bigelow, 1904, Bull. Mus. Comp. Zool. at Harvard College, vol. 39, p. 253, plate I, fig. 2. Bell flat, 2 mm. wide, mm. high. About 30 short, thick tentacles with swollen tentacular knobs on the margin. 32 to 40 small lithocysts each with 1 or 2 very short and broad, with 4 simple lips. The gonads are the most distinctivefeatur

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Medusae of the world . 147- Fir,. 147.—Phialidium iridescens, after Maas, in Voyage S. Y. 148.—Phialidium brunescens, after Bigelow, in Bull. Museum Comp. Zool. at Harvard College. Phialidium brunescens, Bigelow, 1904, Bull. Mus. Comp. Zool. at Harvard College, vol. 39, p. 253, plate I, fig. 2. Bell flat, 2 mm. wide, mm. high. About 30 short, thick tentacles with swollen tentacular knobs on the margin. 32 to 40 small lithocysts each with 1 or 2 very short and broad, with 4 simple lips. The gonads are the most distinctivefeature of this medusa, and are large, thick, and prominent, and occur on the proximal thirdsof the 4 radial-canals. Bell colorless. Radial-canals and gonads greenish-yellow. Tentaclescolorless, but with a prominent, brown pigment-spot at the base of each. Maldive Islands,Indian Ocean, in January. Distinguished by its swollen tentacle-bulbs, large hemisphericalgonads, and flat hell with relatively thin walls. The nearly

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcnidari, bookyear1910