Plate 6o. 



Fig. I. Pclagta uoctiluca, mature medusa, 1.25 times natural size. Naples 

 Zoological Station, November 29, 1907. 



Fig. 2. Pelagia noctiluca. Aboral view of a marginal sense-organ. 



Fig. 3. Pelagia noctiluctt. Side view of one of the nettling-warts near the 

 mid-radius of the exumbrella. 



Fig. 4. Nausttlioe punctata. Oral view of mature female seven times the 

 natural size. Tortugas, Florida, April 17, 1906. 



Fig. 5. Nausitho'e punctata. Side view of mature medusa showing sculptur- 

 ing of exumbrella. Tortugas, Florida, June, 1906. 



See page 553 for figures 4 and 5. 



Drawn from life, by the author. 



