SIMPLICIA. 379 
BERENIX, Pér.(1) 
Where there is no pedicle whatever, but where the inferior sur- 
face appears to be provided with little suckers along the track of the 
vessels(2). 
Evupora, Per. 
Where not even suckers are visible, but where the two surfaces 
are smooth and without any apparent organs. 
One species is found in the Mediterranean—Eudora moneta, 
Cuv.—about the size of a five-franc piece, and so called by the 
people. 
When these simple animals become more concave, their inferior 
surface becomes an interior one and may be considered as a true 
stomach. They form the 
CaryspEA, Pér. 
Those, in which no traces of vessels can be perceived internally, 
only differ from Hydra in size. 
We should separate from the Medusz, certain genera united with 
them by Linnzus from insufficient affinities. 
Brror, Mill. 
Where the oval or globular body is furnished with salient ribs 
covered with filaments or a sort of lace, extending from one pole to 
the other, and in which ramifications of vessels are perceptible and 
a kind of motion resembling that of a fluid. The mouth is at one 
extremity; in those that have been examined they lead into a sto- 
_ mach that occupies the axis of the body, and on the sides of which 
are two organs probably analogous to those we have styled ovaries 
in the Medusz. Such is the 
B. pileus; Medusa pileus, Gm.; Baster, I, III, xiv, 6,7; Encyc. 
(1) Cuvieria carisochroma, Pér., Voy. aux Terres Aust., XXX, 2. 
(2) Medusa marsupialis, Gm., Plancus, Conch., Min. Not., IV, 5;—Carybdea 
periphylla, Péron. 
