Zoology.'] NATURAL HISTORY OF VICTORIA. [Polyzoa. 



Port Phillip Heads. 



Closely allied to C. aurita (Busk sp.), but differing principally 

 in the absence of the central foramen. The genus Claviporella, as 

 proposed by me, differs from Catenicella in the peculiar key-hole 

 form of the mouth, and from Calpidium. in which the shape of the 

 mouth is somewhat similar, in wanting the overarching hood of 

 that genus. 



Explanation of Figure. 



Plate 146. — Fig. 6, portion of branch, anterior surface, magnified, showing also a terminal 

 ocecium and one in the continuity of a branch. 



The specimens and descriptions of the Polyzoa on this Plate are 

 from Mr. MacGilhvray. 



Frederick McCoy. 



C 177] 



