28 DESCRIPTIVE CATALOGUE OF THE 



Umbrella flat scutiform, with, eight deep ocular incisions, 208 coalescing 

 marginal flaps (in each octant 24 narrow rectangular velar flaps between two 

 rudimentary ocular flaps). Sub-genital ostia half as broad as the pillar 

 between them. Arms about as long as the radius of the umbrella, doubly 

 pinnate, flat spread out as long as broad. 



Locality : Australia (North-west coast) 1 ? Weber. 



Familia CEPHEIDJE. 



Claus, 1883. 



Rhizostomte with broad flat brachial disc. The eight mouth-arms form by 

 branching dichotomously two terminal branches. They are studded with long 

 nettle-clubs or filaments. Canal nets very dense with small meshes and 

 generally with numerous radial canals. 



Genus CEPHEA. Peron et Lesueur, 1809. 



With eight bifurcate mouth-arms. The branches are simple and not clicho- 

 tomous. The upper arm does not extend beyond the bifurcation. Four 

 distinct Euligneital pouches. 



CEPHEA FUSCA, Peron et Lesueur. 

 Cepheafusca, Peron et Lesueur. Tableaux cles Meduses, page 3d. 



Cepheafusca, E, Haeckel. Das System der Medusen. Seite 575. 

 Cepheafusca, Eschscholtz. System der Acalephen. Seite 57. 

 Cassiopeafusca, Dussumier. Musee du Jardin des plantes, No. 111. 



Polyrhiza Jusca, L. Agassiz. Contributions to the Natural History of the 

 United States, iv, page 156. 



Cepheafusca, R v. Lendenfeld. The Scyphomedusse of the Southern Hemi- 

 sphere. Proceedings of the Lhmean Society of New South Wales ; 

 volume ix, part 2, page 286. 



Umbrella cap-shaped, central dome flat vaulted, covered with sixteen or 

 twenty large conic excrescences. Divided from the thin margin of the 

 umbrella by a deep circular furrow. In every octant eight flaps which appear 

 as secondary flaps of one large primary one which lies between the two ocular 

 flaps. The two flat branches of the under arm three times as long as the 

 simple upper arm. They do not reach to the margin of the umbrella. Fila- 

 ments numerous, decreasing in size centrifugally. The longest as long as the 

 iirnbrella radius. 



Colour. -Umbrella, dark brown. Ex-umbrella, with eight white radial 

 stripes. Arms, yellowish ; filaments, white. 



Size. Breadth of umbrella, 150 mm. ; height, 30 mm. 



Locality. North-west coast of Australia : de Witt's Land, Peron et 

 Lesueur ; Malabar, Dussumier. 



