362 Rev. T. Hincks’s Contributions towards a 
replaced by an elongate form, originating below the orifice, 
and stretching up alongside it, with a long slender mandible 
(occasionally subspatulate) directed upwards. Zowcia very 
irregularly placed and turned in all directions (Pl. XIII. 
figs. 7, (a). 
ii. Zowcia very regularly disposed in lines. Owctwm thickly 
punctured, and with a penthouse-like projection in front; a 
triangular avicularium below the orifice. . 
ii. Form bimucronata (Pl. XIII. fig. 6). Zowcia ovate, 
moderately convex, in linear series, radiating regularly from 
the central primary cell, separated by raised lines, punctured 
round the margin; surtace reticulated, silvery ; orifice subor- 
bicular, with a denticle on the lower lip; peristome (in the 
older cells) much elevated, thin, rising on each side into a 
prominent mucronate process, more or less produced in front, 
two spines on the upper lip; frequently on one side a gigantic 
aviculartum, which originates alongside the peristome (near 
the top of the orifice), and extends straight downwards to 
the base of the cell; beak deeply channelled, broad at the 
base, and narrowing gradually towards the rounded extremity ; 
an elongate subtriangular opening on the upper half of it ; 
mandible long, very slender above the expanded basal por- 
tion, formed of very delicate membrane, directed downwards. 
This variety also occurs in Australia (J. B. Wélson). 
This has much the appearance of a distinct species ; but it 
is connected by intermediate varieties with the typical form. 
We might expect the most widely distributed forms to be 
the most lable to variation; and this is certainly so in the 
case of the present species and Microporella ciliata, which 
are both eminently cosmopolitan. 
Family Celleporide. 
CELLEPORA, Fabricius (part). 
Cellepora, ?n. sp. 
A Cellepora occurs amongst Dr. Anderson’s specimens 
which is identical with that described in my “ Report on the 
Polyzoa of Queen Charlotte Islands’ under the provisional 
name of C. brunnea. 
Suborder CYCLOSTOMATA, 
Family Lichenoporide. 
LicHenopora, Defrance. 
Lichenopora Nove-Zealandic, Busk. 
Range. New Zealand. 
