270 MR. AETHTJE W. WATEES OS 



had come into her possession marked B. Golensoi, Busk, MSS. 

 Both these entirely correspond with the Australian B.Jissa, now 

 known from Victoria, New South Wales, Tasmania, and New 

 Zealand. 



Figure 21 represents a calcined specimen from Tasmania, 

 showing the way in which the groove of the sublabial pore forms 

 two projections in the aperture. This can he seen in all the 

 specimens which have come under my notice, though not in every 

 zooecium. The square opening in the lower part of the ovicell 

 is also shown. The avicularium is sometimes erect like that of 

 R. cellulosa, and there is a triangular fenestral avicularium. 



Betepoea nov^ ZELANDiiE, sp. uov. (PI. VI. figs. 1-6 & 19.) 



The zoarium is convoluted and of a pink shade, but the colour 

 has probably faded. 



The zooecia are distinctly separated, with the line of separation 

 ending near the oral spines ; surface minutely granular ; no peri- 

 stome ; aperture in mature zooecia sunk. Oral aperture very 

 long, crenulated ; sides nearly parallel, with a very large tooth on 

 each side, giving the appearance of a sinus. The operculum 

 becomes gradually narrower at the proximal edge and has the 

 muscular dots very distinct, with a thickened band below each. 

 At the side of the aperture, about halfway up, a spine articulated 

 at the base ; on the surface numerous pores as well as a few large 

 scarcely raised triangular avicularia. The dorsal surface has 

 fairly numerous vibices, usually meeting between the fenestrse, 

 and in the area of some there is a triangular avicularium, but 

 this is exceptional, whereas within the fenestras, or on the side 

 of the fenestree, there are numerous triangular avicularia. 



The specimens in my own collection which I first described are 

 without ovicells, but Miss Jelly has very kindly lent me two 

 slides from Wanganui (New Zealand) with ovicells which are 

 widely open, somewhat like those of i£. Imperati, and the terminal 

 zooecia have four to six spinous processes. One specimen has the 

 triangular avicularium immediately below the aperture to almost 

 every zooecium. Although the operculum is Lepralioid the ovicell 

 is Beteporidan, and besides there are the vibices and dorsal 

 avicularia of this genus. 



