iEQUOREA. 



109 



length of the chymiferoiis tubes, they are linear (Fig. 159*) ; opposite 

 each of the chymifei'ous tubes there is one large tentacle, very con- 

 tractile, with a slight swelling at the base ; between the chyniifer- 

 ous tubes, one smaller tentacle and marginal capsules ; the chymiferous 



tubes, near the base of the 



Fi^'. l.W. 



digestive cavity, anasto- 

 mose lVe(|uently ; the sec- 

 tion of the spherosome re- 

 sembles that of Zygodac- 

 t\'la more than any other 

 genus of the family. The 

 disk increases rapidly from 

 tlie circular tube, and re- 

 mains then of the same 

 thickness to the base of 

 tiie projection of the disk 

 in the inner cavity; here 

 the outline of the inner 

 bell suddenly curves down, 

 and projects like a spheri- 

 cal segment, nearly hemi- 

 spherical, in the cavity of 

 the l)ell, the outline of the 

 outer bell havino; a slii2:ht 

 constriction at this point, and from there curving gradually to the 

 abactinal pole. From three to four inches in diameter ; specimens one 

 and a half inches high, measured three and a half inches in diameter. 



Gulf of Georgia, W. T. (A. Agassiz). 



Cat. No. 123, Gulf of Georgia, W. T., June, 1859, A. Agassiz. Medusa. 



^QUOREA Per. et Les. 



^qunren Per. et Les. ; in Ann. dii Mus., p. 22. 1809. 

 jEquorea Less. (p. p.). Zooph. Acal., p. 305. 1843. 

 jEqiiorea Agass. Cont. Nat. Ilist. U. S., IV. p. 359. 1862. 



.ffiquorea ciliata Esch. 



jEquorea ciliata Escii. Syst. der Acal., p. 109, PI. 9, Fig. 1. 1829. 

 JEquorea ciliata Agass. Cont. Nat. Hist. U. S., IV. p. 359. 1862. 

 JBquorea ciliata Less. Zooph. Acal., p. 306. 1843. 



Northwest Coast of North America, Lat. 41° to 51° N. (Eschscholtz) ; 

 Straits of Fuca (A. Agassiz). 



Fiff. 159». Crematostoma flava A. Agass. 



