of some Marine Animals. 



317 



9^ 



3° 8' S., and long. 25° 52' W. ; and I believe them to be all 

 luminous. Upon disturbing the water in the dark with the 

 finger, the water gives out sparks, the same as observed in 

 the sea." — A. M. 



Remarks. — The centre of e is greenish blue, marked 

 crosswise with eight darker lines, and with an octangular 

 spot in the middle. The inner circle is indigo blue, and the 

 outer one greenish blue, scored with darker lines. The arms 

 are a faint blue, obtaining a deeper tint in the glands. The 

 circular band in g is greenish blue. 



From the exact similarity of the arms, it is obvious that 

 these figures represent the same species of sea jelly ; and I 

 suppose it is referable to the same genus as the preceding. 

 If this supposition be admitted, g must be drawn in a re- 

 versed position ; for the " transparent inflated sac " is the 

 mouth in a state of inflation, and the mouth in all these 

 animals is inferior. There are some of the regular Medusa, 

 e. g., iEquoreae and DianaeV, which have a clear gelatinous 

 body, similar to g ; but Mr. Mathews's comparison of it to a 

 sac, and the fact that the Polybrachionia has a purse-shaped 

 and extensile mouth (" os inferum, centrale, bursiforme, 

 extensile," Guilding), along with the arrangement of its 

 glanduliferous arms, incline me to consider this animal as a 

 Polybrachionia, which cannot be better named than by 

 denominating it, in honour of its discoverer, P. Mathews//, 

 — N. 



" Fig. 38. / is very commonly met with at sea : m is the 

 under part, showing its mouth and tentacula. It also pos- 

 sesses the power of stinging, similar to the Portuguese man 

 of war." — A. M. 



Remarks. — The figure agrees exactly with Lamarck's 



