JELLYFISHES 



139 



is usually solitary, seldom being seen in company with others. It is com- 

 mon on the New England coast, and is frequently found stranded on the 

 beach, where it in no way suggests the beautiful appearance it pre- 

 sents when floating in the water. Like Aurelia, Cyanea has a strobila 

 stage. It is supposed that the 

 young remain near the bottom, 

 for they are seldom seen, while 

 adults are plentiful. They begin 

 to appear in numbers at the end 

 of summer from Cape Cod north- 

 ward. 



C. fulva. This species is found 

 in midsummer south of Cape Cod 

 and is common in Long Island 

 Sound. Its general color is light 

 yellowish-brown, the flowing cur- 

 tains being the darkest part of 

 the animal. It is not as large as 

 C. arctica, and the lobes of the mar- 

 gin are deeper and more rounded. 



C. versicolor. The whole disk 



is bluish milky-white, the flowing curtains are light brown, and the 

 tentacles are pink. It is not so large as C. arctica. Found in the spring 

 on the southern coast. 



GENUS Linerges 



L. mercurius, the thimble-fish. The English name indicates the 

 form as well as the size of this little brownish jellyfish, which is found 

 near the Florida Keys, extending in lines for considerable distances. 



Linerges mercurius, thimble-flsh. 



P. cj/anella. Umbrella spherical, margin scalloped, tentacles eight 

 in number; four long appendages ruffled on the edges hang from the 

 mouth ; size about two inches in diameter ; appendages four inches 

 long ; color pink. (See next page.) 



SUBORDER BHIZOSTOMJE 



The Rhizostomae, or root-mouth jellyfish.es, are very remark- 

 able. They have no tentacles, but covering the end of the manu- 

 brium and hanging from it like tentacles are oval appendages 

 with numerous minute funnel-like apertures, called suctorial 

 mouths. As the manner of locomotion of jellyfishes is peculiar 

 to themselves, so also is this many-mouthed development unique 

 in the animal kingdom. The type of this group, described below, 

 is found on the Florida Keys. The different species vary in 

 diameter from three to eight inches. 



