Zoologt/.} NATURAL HISTORY OF VICTORIA. [Poh/zoa. 



Plate 39, Fig. 1. 



CRISIA EDWARDSIANA (D'Orb. sp.). 



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

 Sub-order Cvclostomata. Fam. Crisiidie.) 



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



Description. — CpUs 0-3 in an internode, sparsely punctate, much elong-ated, 

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

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

 large, nearly round or pyriform. 



Reference. — Crisu/ia Edn'ardda'na, D'Orbigny, Voy. dans i'Amer. Mer. v. 8, 

 t. i. 4-8. 



Williamstown. 



The cells are arranged in pairs, except in those iuternodes Avhere 

 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, fi-ee and turned abruptly 

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

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

 iumiediately 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 oiricell. 

 Fig. 16, back, magnified. 



Plate 39, Fig. 2. 

 CRISIA BICILIATA (P. McG.). 



Description. — Cells 2-3 in an internode, punctate, elong-ated, 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. Roy. Soc. Vict., 1868. 



[37 ] 



