Zoology.] NATURAL HISTORY OF VICTORIA. [Poh/zoa. 



elongated and transversely I'ugose. Sometimes, however, they 

 are quite smooth. The mouth varies considerably, being either 

 subcircular and entire or with a sinus in the lower lip. The part 

 immediately below the mouth is frequently produced upwards and 

 forwards into a transverse umbo obscuring the lower lip. The 

 ooecia also vary very much. They are crowded towards the 

 centre of the zoarium where they frequently present somewhat 

 the appearance of a Cellepore. The ovicelligerous zocecia, as 

 pointed out by Mr Hincks, are mostly small and aborted. 



The following varieties have been distinguished : — 



Var. o: cornuta. — A stout tubular process on each side of the mouth. 



Var. j3: incrassata. — Walls thickened and opaque. 



Var. y : tuberculata. — A number of tubercles on the front of the zooecia, and 



often a strongly developed umbo below the orifice. 

 Var. S: pellucida. — Described and figured in Plate 38, fig. 9, of the present 



work as Lepralia pellucida. Zooecia very thin and pellucid, mouth small . 



and sinuated. Ooecia smooth and carinate. 



There is some difference of opinion as to the generic position 

 of the species, it presenting several of the characters of Cliorizo- 

 2)ora. Schizoporella, however, seems to be its proper place. 



Explanation op Figures. 

 Plate 186. — Fig. 7, single zooecium. showing a sinus in the lower lip. Fig. 8, group of 

 zooecia from another colony. Fig. 9, part of a colony, showing zooecia with the lower lip entire 

 or sinuated, anH ooecia variously smooth, umhouate, and perforate. 



I am indebted to my friend Mr. MacGillivray for the specimens 

 and descriptions of the Polyzoa on this plate. 



Frederick McCoy. 



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