G66 



MEDUS.E OF THE WORLD. 



American waters. There are a number of local races, as is the case with Cassiopea, which 

 also thrives in harbors. 



Catostylus mosaicus L. Agassiz. 



Ctpbea mosaicaj Quov et Gaimard, 1824, Voyage de rUranU, Zoologie, p. 569, planche 85, fig. 3. 



Rhizosioma mosaica, Huxley, 1849, Philosoph. Trans. Roy. Soc. London, pp. 422, 432, plate 38, figs. 26, 27; plate 39, figs. 28-34. 



Caioitylus mosaicus+ C. wilkfiiiy Agassiz, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 152. 



Crambessa moiaica, Haeckel, 1880, Syst. der Meduscn, p. 622. — vON Lendenfeld, 1883, Annals and Mag. Nat. Hist., ser. 5, 

 vol. 12, p. 259(ncmatocysts in the gelatinous substance); 1884, Proc. Linnean Soc. New South Wales, vol. 9, pp. 428, 926; 

 ig88,Zeit.fur wissen.Zool.,Bd.47, p. 23i,taf. I9,fign. 10, 13; taf. 2i,fign. 21, 23; taf. 23, fign. 44-46, 51 , 58, 59; taf.24, 

 fign. 63-65; taf. 25, fign. 66-78; taf. 26, fign. 82, 83, 93, 96, 97; taf. 27, fign. 108, 109, 111-113, 1 15-119 (detailed descrip- 

 tion). — Agassiz, A., and Mayer, 1898, Bull. Museum Comp. Zool. at Harvard College, vol. 32, p. 16, plates 2, 3, 5 figs.— 

 Maas, 1903, Scyphomedusen der Siboga Expedition, Monog. it, p. 47. 



Bell fully 250 to 350 mm. wide, somewhat flatter than a hemisphere when expanded. 

 E.\umbrella covered with coarse granulations. 8 rhopalia without an ocellus, but with an 

 exumbrella sensory pit having radiating furrows in its Hoor. There are about 128 long, oval, 

 marginal lappets, about 16 in each octant, ail similar each to each and with smooth exumbrella 

 surfaces. Arm-disk somewhat wider than bell-radius. There is a unitary subgenital cavity. 



