212 MR. R. OWEN ON THE ANATOMY OF THE CALYPTRZIDA. 
. The vas deferens. 
s 
t. (Fig. 4.) The ovary. 
u. (Fig. 5.) The oviduct. 
v. The mucous gland. 
w. The auricle, x. The ventricle, of the heart. 
«. The supra-cesophageal ganglia giving off the nerves to the tentacles 
and eyes. 
. The sub-cesophageal ganglia. 
y- The branchial ganglion. 
DR 
