THE MEDUSA PILEls. ■J'JZ 



SPECIES III. 



MEDUSA OVOIDAL1S, 



OK THE 



OVAL-SHAPED MEDUSA. 



Form ovoidal. Eight segments. A double cavity united 

 by a small canal. ( Sensitive Iridescent fringes. Found 

 in latitude 75° 40' N. Longitude .5° or 6° W. Colour 

 similar to the former. 



SPECIES IV. 



MEDUSA P I L E U S. 



This is one of the most curious medusae. It consists of eight 

 lobes, with a beautifully iridescent finny fringe on the ex- 

 ternal edge of each. A canal, four-fifths of the animal, 

 penetrates the centre of it ; and two red cirrhi, which may 

 be extended to the length of nearly a foot, proceed from 

 a crooked cavity in opposite sides. The animal is semi- 

 transparent. Its colour is white with a blush of red, the 

 finny fringes of deeper red. It is found of various sizes ; 

 one specimen taken up in latitude 75° 40' N., longitude 

 5^ or 6° W., in a green-coloured sea, was three inches in 

 length. It also inhabits the Mediterranean Sea, and is per- 

 haps the luminous species described by Forskal, under the 

 name of Medusa Denso. 



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