BRYOZOA FROM AUSTRALIA. 433 



This only differs . from Catenicella pulchella, Maplestone* (after- 

 wards described by MacGillivray f as Catenicella concinna), in having 

 a large pore below the aperture instead of a notch in the aperture. 

 But we often find the suboral pore close up to the aperture ; and I 

 believe that we shall find that the notch is represented by this 

 suboral pore ; I therefore had much hesitation in giving a new 

 name, which I anticipate will not be permanent. 



Loc. Fossil : Muddy Creek, Bird Rock, and Waurn Ponds. 



14. Cellaria malvikensis, Busk. 



15. Cellaria ovicellosa, Stol. 



16. Cellaria angustiloba, Busk. 



Melicerita angustiloba,Busk, Quart. Journ. Geol. Soc. vol.xvi. p. 261. 



Cellaria anr/ustiloba, Waters, Foss. Chil. Bry. from Mt. Gambier, 

 Q. J. G. S. vol. xxxviii. p. 260, pi. ix. figs. 28, 29, 30. 



Loc. Fossil : Mount Gambier (Woods Sf Wat.), OrakeiBay (Stol.), 

 Bairnsdale (W.), Muddy Creek, and second specimen from Muddy 

 Creek or Bird Rock. 



17. Cellaria perampla, Waters. 



Cellaria perampla, Waters, Foss. Chil. Bry. fromMt. Gambier, p. 260. 

 Loc. Mount Gambier, Waurn Ponds. 



18. Canda eossilis, Waters. 



19. Scrtjpocellaria scabra, Van Beneden. 



20. Membrastcpora macrostoma, Rss. 



For synonyms see " S.W. Victoria," p. 323. 



This is closely allied to Membranipora roborata, Hincks ; but the 

 zocecia of M. macrostoma are twice the size of those of M. roborata. 



21. Membranipora roborata, Hincks. 



Membranipora roborata, Hincks, Gen. Hist, of Mar. Poly., Ann. 

 & Mag. Nat. Hist. ser. 5, vol. viii. p. 69, pi. ii. fig. 3. 



The fossil fragment from Waurn Ponds is very small and occurs 

 with only one layer, or, as we may say, in the Hemeschara form ; 

 and a recent specimen in my possession from New Zealand, which 

 was sent me by Miss £. C. Jelly as M. roborata, has also only one 

 layer, and, like the fossil, only one avicularium above the zooecium, 

 not two, as described by Mr. Hincks. In the recent M. roborata a 

 radicle tube from the base of each external zooecium unites with 

 those of the neighbouring zocecia to form " the thickened rib along 

 the margin," as described by Mr. Hincks. In the fossil there are 

 four zocecia in a longitudinal row. Opesia 0*18 millim. long. 



Loc. Living in bilaminate condition off Curtis Island (H.) ; in uni- 

 laminate condition, New Zealand. Fossil : Waurn Ponds. 



* " New Species of Polyzoa," Journ. Micr. Soc. of Victoria, vol. i. nos. 2, 3, 

 p. 64, pi. v. fig. 4. 



t " On some new Species of Catenicella" Koy. Soc. Vict. 1880. 



