THE VOYAGE OF H.M.S. CHALLENGER. 
794 
as to form a support, a contrivance, no doubt for preventing the animal being upset in 
the deep-sea mud ; it has three well developed crowns of pali. 
“ Stephanotrochus is another new genus necessitated by the Challenger’s discoveries. 
Fig. 279 . — Deltocyathus magwificus, Moseley ; x 2. From Fig. 280 . — Odontocyathus coronatus, Moseley ; 
129 fatlioms, off the Ki Islands. x 2. 
Several species were obtained of which two are here figured (figs. 281, 282). It was found 
to range from near Sydney, New South Wales, all over the Atlantic. Mr. John Murray 
has dredged it lately off the Scotch coast. Stephanotrochus diadema has the most widely 
patent calicle of the species of the genus, whilst Stephanotrochus nobilis has its calicular 
Fig. 281 . — Stephanotrochus diadema, Moseley. Off Pernambuco, Brazil, 
675 fathoms. 
Fig. 282 . — Stephanotrochus nobilis, Moseley. 
Off the Azores, 1000 fathoms. 
wall most completely folded inwards round the mouth, but the two species are obviously 
closely connected. 
“ A great many species of Flabellum, a very widely spread genus, were obtained. The 
most remarkable amongst these', and the finest example of the genus, is Flabellum 
