Title: Bulletin - United States National Museum
Identifier: bulletinunitedst10011928unit (find matches)
Year: 1877 (1870s)
Authors: United States National Museum; Smithsonian Institution; United States. Dept. of the Interior
Subjects: Science
Publisher: Washington : Smithsonian Institution Press, (etc. ); for sale by the Supt. of Docs. , U. S. Govt Print. Off.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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SCYPHOMEDUSAE COLLECTED BY STEAMER ALBATROSS. 189 CARYBDEA ALATA, var. GRANDIS Agassiz and Mayer. Charybdea grandis Agassiz and Mayer, 1902, Mem. Museum Comp. Zool. at Harvard College, vol. 26, p. 153, pi. 6, figs. 26-31. Carybdea alata, var. grandis Mayeb, 1910, Medusae of the World, vol. 3, p. 511, fig. 329. The bell of this medusa becomes 230 mm. high, but the largest specimen of this cruise was obtained by the Alba- tross in Borneo and is only 166 mm. high. This tropical Pacific form may be distinguished by its short, wide- flaring pedalia and by having only 1 or 2 median eyes upon each sense-club and no lateral eyes. When young, how- ever, there are 2 large median and 2 small lateral eyes, but the latter appear to fuse later with the median eyes. There are 24 velar canals which are short, branched, and non-anastomosing. C. moseri Mayer is only a half-grown stage of this medusa. In C. alata there are 6 eyes in each sense-club, and the pedalia are longer and narrower than in the large variety grandis. The dimensions and characters of the two largest of the three specimens found by the Albatross are as follows:
Text Appearing After Image:
Fig. 3. — Carybdea alata, half- grown MEDUSA FROM THE HA- WAIIAN Islands. Two views of ITS SENSE - CLUBS AND A QUAD- RANT OF THE VELARIUM, SHOWING THE STRAIGHT SIMPLE VELAR CANALS. Station 5361, Feb. 9, 1909, Manila Bay, Luzon, 12 D. 5594, Sept. 30. 1909, fathoms, 2 specimens. off Mount Putri, Cat. No. 28713 U.S.N.M. Borneo. Height of bell Width of bell Length of pedalia Width of pedalia at widest part Width of pedalia at base Height of sensory niche above velar margin Number of eyes in each sense-club Gonads 120 ! 166. 88 ' 144. 38 along inner side i 77 along outer side. I 36 along inner side. 16.5 ! 29. 14 16 31. 2 median, no lateral eyes 2 median, no lateral eyes. Small, immature Small.

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