260 Mr. A. W. Waters on Australian Bryozoa. 



sides of the fasciculi there are zooecial apertures, so that in 

 places it looks like a little forest of Entalophora. 



It is a question whether this is a complete growth, or only 

 the young- form of a growth like Fascicularia tuhipora^ and 

 from one piece this cannot be decided. 



Log. Port Phillip Heads; Bottle-and-Glass Kocks, Port 

 Jackson, 8 fath., " rocky bottom " {Br,). 



86. Mesenteripora rejjens^ Haswell. 

 (PL VII. figs. 6 & 7.) 



Mesenteripora repens, Haswell, Proc. Linn. Soc. N. S. Wales, vol. vi. 

 . p. 199. 



Some specimens from Watson's Bay spread over Cellepora 

 &c., forming layers several inches across. On the basal por- 

 tion the zooecial divisions are scarcely visible, and the zooecial 

 tubes are mostly closed by a cover with a projecting tubule, 

 but near to the raised ridges the zooecia project and are more 

 or less free ; and from the ridges themselves they project a 

 considerable distance, with a bilabiate peristome. I have also 

 a specimen of Mesenteripora from Port Phillip in which the 

 zooecia on the basal crust are distinct and free at the end, 

 with covers having an excentric projecting tubule, and the 

 zooecia are not formed into long elevated ridges, but rise up 

 about 3-4 millim. as small compressed stalks with a lamina in 

 the middle along the longer axis. 



Mesenteripora repens^ with its beautiful white punctured 

 surface, is a very attractive object. 



hoc. Broughton Island, New South Wales (Z/".) ; Wat- 

 son's Bay, Port Jackson, " under stone" (sent by Brazier'). 



87. Discoiuhigera (?) lineata (MacG.). 

 (PI. VI. fig. 24.) 



Diastopora lineata, MacGillivray, Trans. Roy. Soc. Vict. vol. xxi. p. 96, 



pi. iii. fig. 1. 

 Liriporalineata, MacG. Cat. Mar.Polyzoaof Vict., Roy. Soc. Vict. 1887, 



p. 32. 



All my specimens are surrounded by a broad lamina, and 

 the central cells are closed by a perforated membrane ; the 

 series of zooecia are very much raised near the border. In two 

 specimens the zoarium is regularly discoid, about 5 millim. in 

 diameter — one from Port Phillip spreads irregularly over a 

 space of about | inch, forming strap-shaped lobes. The 

 ovicells occur as tangential swellings near the border, and 

 have a round tubular opening at the base. 



The zoarial appearance is much the same as that of LicJieno- 

 pora, but there are no interstitial pores, and the structure is 



