MEDUSAE OF THE WORLD. 



Synopsis of the Forms of Catostylns Continued. 



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

 also thrives in harbors. 



Catostylus mosaicus L. Agassiz. 



Cephea mosaica, QUOY ET GAIMARD, 1824, Voyage de VUranie, Zoologie, p. 569, planche 85, fig. 3. 



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



Catostylus mosaicus + C. wilkesii, AGASSIZ, L., 1862, Cont. Nat. Hist. U. S., vol. 4, p. 152. 



Crambessa mosaica, HAECKEL, 1880, Syst. der Medusen, p. 622. VON LENDENFELD, 1883, Annals and Mag. Nat. Hist., ser. 5, 

 vol. l 2, p. 259 (neraatocysts in the gelatinous substance); 1884, Proc. Linnean Soc. New South Wales, vol. 9, pp. 428, 926; 

 i888,Zeit.fiirwissen.Zool.,Bd.47, p. 231, taf. 19, 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 15-1 19 (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. II, p. 47. 



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

 Exumbrella covered with coarse granulations. 8 rhopaha without an ocellus, but with an 

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

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

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



