THE 
NUMMULAR MEDUSA. 
Generic Character. 
Body gelatinous, orbicular, depressed. 
Mouth beneath, central. 
Specific Character. 
Whitish, orbicular, subpellucid, radiated ME¬ 
DUSA, with three blue appendicles be¬ 
neath. 
The beautiful Medusa represented in its natural 
size on the present plate is a native of the northern 
seas, where it is otten observed in considerable num¬ 
bers, swimming’ on the surface of the water. In its 
general habit it bears the greatest resemblance to 
the Medusa Porpita of Linnreus, with which it ap¬ 
pears to have been generally confounded. 
