10 Mr. A. W. Waters on Aastralian Bryozoa. 



ScMzoporella mucronata, Smitt. (PI. II. fig. 9.) 

 Hippothoa mucronata, Smitt, Floridan Bryozoa, p. 45, pi. viii. fig. 169. 



In the Green Point specimen there is a semicircular raised 

 ridge below the aperture. The aperture is about 0'12 millim. 

 wide, and on the operculum there is a very distinct, elongate, 

 semitransparent area. In young cells there is a row of pores 

 round the edge of the zooecium ; the ovicell is small, raised, 

 globular-, but seldom mucronate. 



S. simplex, Johnst. {8. Johnstom, llidley), dredged by the 

 * Challenger ' between Fayal and Pico, has a similar ridge 

 below the aperture in the ovicelligerous cells, and these arc 

 very similar to cells of the present Australian specimens ; but 

 the species differ in the first only having the ridge on ovicelli- 

 gerous zooecia. 



Loc. Florida, 29 fath. ; Green Point, Port Jackson. 



ScMzoporella Jtlocincta, Rss. (PI. I. figs. 17, 18.) 



Lepralia filocimta, Reiiss, " Bry. (Est.-Ung. Mioc." Denkschr. Ak. 



Wissenscli. Wieu, vol. xxxiii. p. 178, pi. viii. fig. 4. 

 Schizoporella Jtlocincta, Pergons, " Bry. du Tasmadjan/' Bull. Soc. 



Malac. de Belgique, vol. xxii. p. 14. 



Zoarium incrusting. Central zooecia erect, the outer ones 

 decumbent ; shell thick, with a few larger pores. The 

 oral aperture is large, cllthridiate. There are a few semicir- 

 cular avicularia between the zooecia, but they do not occur 

 o-encrally. The ovicells are wide and short, not very much 

 raised, covered with pores similar to those on the surface of 

 the zooecia. 



At first I thought this was Cellepora megasoma of Mac- 

 Gillivray, as it corresponds with some of the figures, and it 

 is not impossible that this is what MacGillivray first described 

 under that name. 



Loc. Living : Green Point, Port Jackson, Fo.?sil : Mio- 

 cene of Forchtenau and Belgrade. 



Schizoj^orella lata, MacG. 



Schizoporella lata, MacG. Trans. Roy. Soc. Vict. vol. xix. p. 132, 

 pi. i. tig. 7 ; Zool. Vict. dec. xiv. p. 14o, pi. cxxxviii. fig. 2. 



This differs from 8. amhita, Waters, in having a much 

 narrower ovicell, evenly punctured, and in having a small 

 triangular aviculariura immediately below the aperture. 8. 

 lata is very much like Lepralia tenella, Rss. 



Loc. Port Phillip (Victoria) ; Green Point, Port Jackson. 



