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Food-Capture and Ciliation in Ephyree of Aurelia. 223 
animals in the presence of food. _Any arm may bring its contribution at any 
time, and the mouth seems sometimes puzzled which to attend to first. An 
ephyra swimming in a tank is occasionally seen to stop and flex one or more 
of its arms towards the mouth. It may be feeding in the manner just 
described, but in any case every pulsation is capable of wiping one or more 
of the lappets against the mouth. 
FIGuRE 1. 
To illustrate capture of infusoria by ephyre ; see explanation in text. 
Inf. 1. Infusorian paralysed and adherent to lappet but in course of being transferred 
to mouth. 
Inf, 2. Infusorian within manubrial canal, 
Inf. 3. Infusorian within gastric cavity. 
m.a.—mouth angle; m./.—lip ; p.—gastric filaments ; ¢.—tentaculocyst. 
Infusoria struck by the stinging threads are sometimes killed at once and 
begin to disintegrate before they are swallowed. Sometimes they are merely 
paralysed, and, resuming activity after a short time, manage to escape. 
Nauphlius larve and minute Copepods may be attacked by young ephyre 
with occasional success. However, out of over 2000 ephyre 1 to 5 days’ old 
from the Millport tanks, which I examined for abnormalities, not one showed 
