Zoology.] NATURAL HISTORY OF VICTORIA. [Pofyzoa. 



with Busk's C. tridenticulata, although not entirely agreeing with 

 the characters given by him. The number of spines, in my speci- 

 mens, varies from 2 to 4 ; they are long, slender, and nearly 

 straight. The zooecia are very irregularly placed, immersed ; the 

 surface granular and glistening. The sub-oral avicularium (absent 

 in some zocecia) is very small, usually situated on a slightly 

 elevated rostrum, which, however, is occasionally considerably 

 developed. I have not seen the ocecia nor the vicarious avicularia 

 with the long tubular processes described by Busk. 



Explanation of Figure. 

 Plate 128. — Fig. 3, portion of specimen, magnified. 



The specimens and descriptions of the Celleporce on this plate 

 are from Mr. MacGillivray. 



Frederick McCoy. 



Vol. II.— Decade XHI.-r. Ill] 



