Descriptions of New, or Little Known, Polyzoa. 113 



small, broad, and situated on a calcareous eminence, usually 

 by the side of the mouth, or of great size,, with a long, 

 narrow, acute mandible, nearly equalling the cell in length. 



Port Phillip Heads, Mr. J. B. Wilson. 



At first sight this species has a striking resemblance to a 

 Rliyncopora, especially R. longirostris of Hincks, the large 

 avicularia of which are very similar. The formation of the 

 oral process, however, is quite distinct. It is not an out- 

 growth from the side of the mouth, but is a process of the 

 peristome springing from the lower margin below the sinus. 



Family Cellepoeid.e. 



Lekythopora liystrkc, M'G. Plate II., fig. 6. 



Of this species I have given an illustration to show the 

 form of the mouth, which, in my previous figures, was 

 obscured by the growth of the peristome. It is lofty, and 

 with a sinus in the lower lip. 



GelleporOj munita, n. sp. Plate II., fig 5. 



Zoarium erect, branched ; branches cylindrical, annulated 

 by slight depressions surrounding the branches. Cells con- 

 fused, indistinct. Mouth wide, with a deep rounded sinus 

 below. An avicularium on one or both sides. Numerous 

 scattered avicularia of varying size, some very large. 

 Ovicell with a distinct area, with numerous small depres- 

 sions. 



Port Phillip Heads, dredged by Mr. Wilson and myself. 

 Readily recognised from* our other Victorian species by the 

 distinctly annular appearance of the thick, blunt branches. 



Cellepora longirostris, n. sp. Plate III., Hg. 1. 



Zoarium erect, branched, cylindrical. Cells very indistinct, 

 decumbent. Mouth with a distinct, rounded sinus. A 

 small avicularium is found on one side of the sinus, becoming 

 carried forward by the development of the peristome, the 

 opposite corners of which arch over in front of the sinus, 

 meeting to form a rounded opening, which afterwards is 

 filled in. Numerous scattered avicularia, with very long, 

 narrow mandibles, pointed downwards. 



Port Phillip Heads, Mr. J. B. Wilson and myself. 



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