^QCrOREA. 



109 



length of the chymiferous tubes, they are linear (Fig. 159'') ; opposite 

 each of the chymiferous tubes there is one large tentacle, very con- 

 tractile, with a slight swelhng at the base ; between the chymifer- 

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

 tubes, near the base of the Fig.isD". 



digestive cavity, anasto- 

 mose frequently ; the sec- 

 tion of the spherosome re- 

 sembles that of Zygodac- 

 tyla more than any other 

 genus of the family. The 

 disk increases rapidly from 

 the circular tube, and re- 

 mains then of the same 

 thickness to the base of 

 the 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 beU, the outline of the 

 outer bell having a slight 

 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, Gidf of Georgia, W. T., June, 1859, A. Agassiz. Medusa. 



iEQUOREA Per. et Les. 



JSquorea Per. et Les. ; in Ann. du Mus., p. 22. 1809. 

 ^quorea Less. (/>. p.). Zooph. Acal., p. 305. 1843. 

 ^quorea Agass. Cont. Nat. Hist. U. S., IV. p. 359. 1862. 



iEquorea ciliata Esch. 



^quorea ciliata Esch. Syst. der Acal., p. 109, PI. 9, Fig. 1. 1829. 

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

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



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

 Straits of Fuca (A. Agassiz). 



Fig. 159". Crematostoma flava A. Agass. 



