348 INVERTEBRATA OF MASSACHUSETTS. 



AuRe'hA AURi'tA, MiJLL. ; Zoo/. £>aK., tab. 7G, 77. Encyc. Meth., p\. 

 94, f. 1 - 3. 



This is our common Sun-fish or Sea-jelly, well known to all 

 who are familiar with the sea in July and August. 1 could never 

 perceive any tingling sensation from handling it. 



AURE^LIA FLAVi'dULA .'' Peron and Lesueur. 



A small species, of a rusty-yellow color, about the size of an 

 English shilling ; the margin divided into eight moderately deep 

 scollops, all of which are fringed with long ciliae. Its surface 

 appears granulated. Observed abundantly in March. 



Aure'lia . Another species, about two thirds the 



size of the preceding, in which the scollops are 

 much less conspicuous, while the little flaps be- 

 tween them are more developed ; the ciliae are 

 shorter, and the tentacula about the mouth seem 

 to be united into a tube spreading a little at its ex- 

 tremity. Found a little later. 



Ephy'ra OCTOLOBA'ta .'' Blainv.; Man. d'JlcUn., 273, pi. 36, f. 3. 



About one fourth of an inch in diameter, of a rusty- 

 yellow hue, having eight lobes, the divisions between 

 which extend half way to the centre ; each of these 

 lobes is again divided by a deep fissure ; margin not 

 ciliated. Found with the preceding. 



OcEA'NIA TUBULo'sA, Sars ; Bcskr. ov. Puli^ph.,2o. 



A perfectly hyaline, balloon-shaped animal, about the 

 size of a pistol-bullet. It is open at the bottom, and has 

 four threads hanging from the margin, and from the centre 

 a club-shaped tube, all of which are capable of great ex- 

 tension. Its motions are very rapid. Found in April 

 and May. 



HiPPOCRe'nE BuGAINVi'lLII, Bra^idt ; SchirvKjuaUen, p]. 20. Pe- 

 tersburg Trans., ii. 



Another rather large, balloon-shaped animal, of a bluish tint, 

 having four tufts of ciliae attached to the margin, and a cross-shaped, 



