Zoology.] NATURAL HISTORY OF VICTORIA. [Polyzoa. 



Plate 39, Fig. 1. 



CRISIA EDWARDSIANA (D'Orb. sp.)- 



[Genus CRISIA (Lamx.). (Sub-kingd. Mollusca. Class Polyzoa. Order Infundibulata, 

 Sub-order Cyclostomata. Fam. Crisiidse.) 



Gen. Char.— Two or more cells in an internode.] 



Description. — Cells 2-3 in an internode, sparsely punctate, much elongated, 

 upper part free and projecting- forwards j mouth circular. A long 1 , jointed spine 

 articulated to one of the cells of an internode. Cells distinct on the back. Ovicell 

 large, nearly round or pyriform. 



Reference. — Crisidia Edwardsiana, D'Orbigny, Voy. dans l'Amer. Mer. v. 8, 

 t. i. 4-8. 



Williamstown. 



The cells are arranged in pairs, except in those internodes where 

 a branch is given off, when there are three, the branch springing 

 from the lowest. They are much elongated, narrow, and for a 

 large extent, frequently nearly a half, free and turned abruptly 

 forwards. A long, hollow, jointed spine is attached to the outer 

 and posterior part of one, or occasionally of each cell, at or 

 immediately above the point where it turns forwards. The joints 

 of the polyzoary and spines are black. 



Explanation of Figures. 



Plate 39.— Fig. 1, natural size. Fig. la, front of branchlet, magnified, showing ovicelL 

 Fig. 16, back, magnified. 



Plate 39, Fig. 2. 



CRISIA BICILIATA (P. McG.)< 



Description. — Cells 2-3 in an internode, punctate, elongated, upper part free 

 and projecting forwards; mouth circular. A pair of long", jointed spines articulated 

 to the outer part of each cell, except to those hearing the secondary branches, a 

 short distance below the mouth. Cells distinct at the back. Ovicells of moderate 

 size or small, much elongated, nearly elliptical in outline, situated at the angle of a 

 bifurcation. 



Reference.— P. H. MacGillivray, Trans. Rov. Soc. Vict., 1868. 



[ 37 ] 



