PLATE XVIII. 



via. 



1. DlCORYNE CONFERTA, p. 105, nat. S1Z6. 



1 . The same, magnified. 1 b. The gonozooid (female), 



magnified. After Alder. 



2. HETEROCORDYLE CONYBEAREI, p. 107, a colony, of the 



nat. size, on shell. 



2 a. A portion, magnified. 2 b. The gonophore, magnified. 



After Allman. 



