EOLIS CINGULATA. 



Hystrix, under which we first published this species in the f Annals of Natural History,' but 

 finding since that the name had been previously used by M. Otto for an allied species found 

 in the Mediterranean, we have now changed it to cingulata. The species of M. Otto has 

 the branchial papillae banded in a similar manner to ours, but they are more numerous, and 

 arranged in ten dense rows. His figures appear to be taken from a spirit specimen, and 

 there is no mention of colour in his specific character, but, according to M. Risso, the body is 

 of a deep orange-colour when the animal is alive, and the papillae banded with black and 

 white. There can be no doubt, therefore, that ours is distinct. Upon this Mediterranean 

 species Risso has founded his genus Ethalion, characterized in that author's usual vague 

 manner. We have read over his generic character carefully, and must confess our inability 

 to distinguish the genus from Eolis. The sole difference we find is that mention is only made of 

 two tentacles. It is evident from his own specific description, however, as well as from the 

 description and figure of M. Otto, that the animal really has four. The genus Ethalion, 

 therefore, may be consigned to the oblivion it merits. 



Figs. 1, 2, 3. Eolis cingulata, different views. 

 4. Spawn, 



