42 



AURELIA FLAVIDULA. 



Aurelia flavidula PER. et LES. 



Amelia flavidula PER. et LES. Ann. Mus., XIV. p. 47. 1809. 



Aurelia flavidula LESS. Zooph. Acal., p. 376. 1843. 



Medusa aurita FAB. Faun. Gron., No. 356. 1780. 



Aurelia aurita GOULD. Rep. Inv. Mass., p. 348. 1841. 



Aurelia flavidula GOULD. Rep. Inv. Mass., p. 348. 1841. 



Epliyra octolobata GOULD. Rep. Inv. Mass., p. 348. 1841. 



Aurelia aurita STIMPS. Mar. Inv. Grand Manan, p. 11. 1853. 



Aurelia aurita MORCH ; in Nat. Bid. til en Besk. af Gronl., p. 95. 1857. 



Aurelia sex-ovariis MORCH ; in Nat. Bid. til en Besk. af Gronl., p 95. 1857. 



Aurelia flavidula AGASS. Cont. Nat. Hist. U. S., III. Pis. 6, 7, 8, 9, 11, IP, 11"; PI. 10, Figs. 18, 



22, 31, 32, 36 ; PI. 10% Figs. 4, 13, 15% 16-41 ; PI. 11% Figs. 1-13 ; IV. pp. 10, 160. 

 Aurelia flavidula PACKARD. A List of Animals . . . 1863. 



g- 65. Occurs from March to the 



end of October ; they collect 

 together, and form large 

 banks at the spawning sea- 

 son. Professor Agassiz has 

 already spoken of the possi- 

 bility of this species proving 

 identical with the Northern 

 European Aurelia aurita. 

 But this, as well as the 

 identity of Cyanea arctica 

 with the European represent- 

 ative, can only be decided 

 after renewed examination 

 of these species. 



Figs. 65, 66 are copied 

 from Professor Agassiz's Con- 

 tributions ; they give a pro- 

 file, and a view from the ab- 

 actinal pole, of our Aurelia. 



Greenland (Fabricius) ; 

 New England (Gould, Ag- 

 assiz). 



Fig. 66. 



a 



Cat. No. 337, Nahant, 1861, L. Agassiz. 



Cat. No. 338, Nahant, 1861, A. Agassiz. 



Cat. No. 339, Nahant, 1858, L. Agassiz. 



Cat. No. 340, Boston, 1862, H. J. Clark. 



Cat. No. 341, Trenton, Me., 1860, Verrill and Shaler. 



Cat. No. 347, Boston, 1862, H. J. Clark. 



Cat, No. 367, Gulf of St. Lawrence, 1861, Anticosti Expedition. 



Museum diagrams Nos. 9, 10, 11, after L. Agassiz. 



Fig. 65 is a profile view of Aurelia flavidula, much reduced. 



Fig. 66 an abactinal view of Aurelia flavidula. I, II, III, IV, are the ambulacral zones ; A, B, 

 c, D, the interambulacral zones ; 1,2, 3, 4, a, b, the respective halves of these systems. 



