. Carnegie Institution of Washington publication. Medusa* of the Philippines and of Torres Straits. 183 Genus CASSIOPEA Peron and Lesueur, 1809. Cassiopea, PERON ET LESUEUK, 1809, Annal. du Mus. Hist. Nat. Paris, tome 14, genre 24, p. 356. GENERIC CHARACTERS. Rhizostomata pinnata with 8 (4 pairs of) adradial, complexly branched mouth-arms, the lower or ventral surfaces of which bear numerous mouth- openings and vesicles. There are 4 gonads and 4 separate subgenital cavities. There are more than 8 marginal sense-organs and twice as many radial-canals as sense-organs. The radial-canals are place
. Carnegie Institution of Washington publication. Medusa* of the Philippines and of Torres Straits. 183 Genus CASSIOPEA Peron and Lesueur, 1809. Cassiopea, PERON ET LESUEUK, 1809, Annal. du Mus. Hist. Nat. Paris, tome 14, genre 24, p. 356. GENERIC CHARACTERS. Rhizostomata pinnata with 8 (4 pairs of) adradial, complexly branched mouth-arms, the lower or ventral surfaces of which bear numerous mouth- openings and vesicles. There are 4 gonads and 4 separate subgenital cavities. There are more than 8 marginal sense-organs and twice as many radial-canals as sense-organs. The radial-canals are placed in communication one with another by means of an anastomosing network of vessels. A well-defined ring-canal may or may not be present, but is commonly absent. Cassiopea andromeda var. baduensis, nov. var. Medusa andromeda, FORSKAL, 1775, Descript. que in Itinere Oriental! Observavit, Hauniae, p. 107, tab. 31. Cassiopea andromeda, ESCHSCHOLTZ, 1829, Syst. der Acalephen, p. 43. A specimen of this medusa is from Endeavour Strait between Australia and New Guinea, and was found by the Albatross on December 23, 1908. The bell is 101 mm. in diameter, flat without an aboral depression, and with 18. FIG. 3.—Cassiopea andromeda var. baduensis. Aboral view of half of the exumbreila on the left. Oral view of 4 of the mouth-arms on the right. rhopalia. There are 4 to 8 usually 6 lappets between successive rhopalia. The arm-disk is octagonal, 36 mm. wide, and the 8 mouth-arms are each 34 mm. long and definitely bifurcated, the forks being 16 mm. long, thus nearly half as long as the total length of the mouth-arms. There are no appendages among the mouth-arms, but these may have been lost. The color has wholly faded in formalin. Another specimen of this medusa was found at Badu Island, Torres Straits, Australia, within a few miles of Endeavour Strait, by the Expedition of the Carnegie Institution of Washington, on November 5, 1913, and was studied Please note that these images are
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