COELENTERATA 65 



Chryasora stage of Dactylometra (Sea Nettle) 



This a variety of the above species that lives in 

 brackish waters. All Dactylometras pass through this 

 form, but those living in brackish water become 

 mature in this stage. They are smaller, the number 

 of tentacles is only twenty-four, whereas the typical 

 marine form has forty, and the pigment is very 

 poorly developed. 



This form is typical of Navesink River, Barne- 

 gat Bay, upper Delaware Bay and similar brackish 

 water situations. 



This variety is exceptionally abundant in parts 

 of Chesapeake Bay — making bathing almost im- 

 possible because of the irritating nature of the 

 stinging cells of the animal. 



Pelagia cyanella Peron and Lesueur 



PLATE III. Fig. 1 



A Gulf Stream form occasionally seen far off the 

 New Jersey Coast, rarely seen near shore. 



Aurelia aurita Fabricius (Moon Jelly) 



(^4. flavidula Peron and Lesueur) 



Fig. 7, 10 



Flat, circular, 8 to 10 inches in diameter; short 

 marginal tentacles; branching radial canals; four 

 conspicuous crescent-shaped egg sacs in the center 

 of the disc. 



