Notes on Meduse of the Western Atlantic. 149 
In the above reference to the absence of nematocysts from the lips of the 
older species, it is purely negative evidence that governs. Nettling organs 
so large and conspicuous as those which stud the lips of the Tortugas species 
would hardly have been overlooked by the careful observers who have 
described the genus. 
The species peroni of Aglaura,’ established by Leukart, appears to be 
the same as that for which we already had the name hemistoma Péron. 
It should not be inferred from the application of the name ciliata to this 
new species of Aglawra that the presence of cilia is peculiar to this one 
species of the genus. In the figures of A. hemistoma which accompany 
the descriptions by Leukart and Metschnikoff? the lips are represented as 
being lined with large and numerous cilia. 
‘Es ist dieselbe fiir die ich hier mit unterdruckung des ziemlich nichtssagenden 
Speciesnamens die obige Bezeichnung gewalt habe.” Leukart, loc. cit. 
~ Metschnikoff, E. 1886. Arbeiten Zool. Inst., Wien, Bd. v1, Hf. II. 
