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The lower surface is covered by a thin epitheca, while the upper surface bears oblique zooecia. 



Ovicells, one or two, more or less inflated, occur in die middle of the upper surface of the colony. 



Waters (19 14) points out that 6'. tubigera Busk is not correctly placed in this genus. 



1. Supercytis watersi n. sp. (PI. XII, fig. 1). 



Supcrcytis': digitata Waters, 1884, t. cit., p. 692, PI. XXXI, figs 22, 26, 27 (fossil, Murray 

 Cliffs, S. Australia). 



Type. 400. A. Stat. 164. i°42'.5 S., i30°4/'.5 E., 32 Metres; sand, small stones and shells. 



348. I. Stat. 213. Saleyer Anchorage and surroundings, o — 36 Metres; coral-reefs, mud and 

 mud with sand. 



Zoarium consisting of a nearly cylindrical stalk, expanding into a wide, shallow saucer, 

 the edges of which are produced into rays. Stalk porous externally, marked by numerous 

 circular lines of growth. Rays having the same structure as the stalk basally, but on their 

 frontal surface, corresponding with the concavity of the saucer, honeycomb-like, the smaller 

 openings being perhaps cancelli. Ovicell central, its roof flat, very porous and distinctly 

 outlined; traversed by several rows of discrete zooecia, the peristomes of which are short and 

 disposed vertically. Ooeciostome apparently resembling one of these peristomes. 



I name this species in honour of Mr A. W. Waters, who has contributed so much to 

 our knowledge of recent and fossil Polyzoa, and has apparently described it from an Australian fossil. 



The present species is represented by only two specimens, one from each of two shallow 

 water dredgings. The older specimen is shown in fig. 1, and consists of a massive stalk 

 expanding distally into a shallow saucer, the edges of which are produced into seven rays. 

 The base of the colony is not quite complete. The outer surface of the stalk is traversed by 

 several longitudinal grooves, which separate a corresponding number of rounded elevations 

 from one another. The surface is further marked by numerous circular lines of growth, some 

 of which occur in the expanded distal part of the colony. The whole of this surface bears 

 numerous pores. In the other specimen (348. I.) the longitudinal grooves are absent. This 

 colony is in a younger state of growth, and longitudinal septal lines are visible; about 5 

 zooecia being seen in the exposed half. The zooecia which thus form the outer part of the 

 stalk appear to extend throughout its entire length, each opening by one of the orifices seen 

 in the cavity of the distal saucer-like part of the colony. 



In both specimens, practically the entire frontal surface, with the exception of the central 

 region, where an ovicell is present, is composed of a honeycomb-like arrangement of calcareous 

 walls. The larger openings thus delimited are no doubt the orifices of zooecia. The smaller 

 ones are either the proximal ends of young zooecia or are cancelli, similar to those found in 

 Lichenopora. 



In both colonies the central region is occupied by an ovicell, the roof of which is a 

 nearly flat calcareous lamina, thickly covered by pores. Through this roof extend the peristomes 

 of a certain number of zooecia, either singly or, as seen towards the right of the figure, two 

 together. These isolated peristomes are short but distinct, and stand vertically. In the specimen 



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