148 



Br. J, E. Duerden on the 

 Fig. o. 





Mesenterial and septal arrangement in two polyps of Soknastrcea huad^ 

 (Dana), a, as found in most polyrs of a colonv • h ^Ta\ ^ '*V<ff* 

 «n enlarged polyp. In the \IJl\t of co'^ile.e' and o^Tnf '" 

 plete mesenteries have been added on the left .Se and ^ iaH; 

 incomplete mesenteries on the right side The new n^irc f ""{ 

 arranged so as to form new cycles. P"""^^ ^"^^ ^^'t 



