108 report— 1884. 



Miocene. 



27. Vincularia cucullata, Reuss, he. cit. p. 60, ' Foss. Bry. Ost.-ungar.' 



(p. 72, Eschara costata); Eschara Reussi, Stol. (Rss. 'Faun, 

 deutsch. Oberoligociin.' ii. p. 36) ; Vincularia Haidivcjeri, Rss. 

 ('Pal. Stud. Alt, Tert. Alp.' ii.). 



28. Vincularia binotata, Reuss. 



29. Vincularia geometrica, Reuss, pi. 33, fig. 16, ' Pal. Stud. Alt. 



Tert, Alp.' 



30. Vincularia exarata, Reuss, pi. 34, fig. 1 = Cellaria ibid., 'Pal. 



Stud. Alt. Tert. Alps.' 



31. Vincularia ijipressa, Reuss, pi. 34, fig. 2, ' Pal. Stud. Alt. Tert. 



Alp.' 



Lower Oligocene. 



32. Vincularia escharella, Roemer, Tab. I. fig. 1, 'Polypar. Nord- 



deutscb. Tert. Gebirgs.' 



33. Vincularia porina, Roemer, Tab. I. fig. 2. (Tbe other species of 



Roemer are referred to Goldfnss's types.) 



Genus Cellaria, (part) Lamouroux. 



Cellaria, (part) Solander, Lamouroux ; Salicornaria, Cuvier, Busk ; 

 Farcimia, Fleming ; Salicomia, Schweigger. 



' Zoarium jointed at intervals, the internodes connected by flexible 

 horny tubes. Zocecia depressed in front and surrounded by a raised 

 border, disposed in quincunx. Avicularia immersed, irregularly dis- 

 tributed, situated above a cell or occupying the place of one. Ooecia 

 immersed.' — Hincks, op. cit. p. 104. 



' The genus Cellaria reaches back as far as the Cretaceous epoch at least, 

 during which they formed a very small group, while at the same period a 

 large number of the allied group Vincularia flourished .... and the 

 genus ranges from shallow to A-ery deep water. Sir Wyville Thomson 

 found forms referable to the family which were obtained during the "Chal- 

 lenger" voyage at depths between 2,000 and 3,000 fathoms.' — p. 106. 



Mr. A. W. Waters, in the first of his very valuable contributions 1 on 

 the Fossil Bryozoa of Australia, gives some very technical points which 

 came out in a rather prolonged study of recent Cellaria, and confirmed 

 by him in the closer study of fossil forms. As some of his observations 

 will be of extreme value as a check in the creation of new species out of 

 forms belonging to one or other of the few known types, it may be 

 well to reproduce some of his remarks, especially as Mr. Waters has 

 been compelled to found at least two new species in the course of his 

 investigations. 



Mr. Waters says : ' The shape of the cell is so variable that it is 

 perfectly useless as a character .... then the bordering rim, which is 

 a character of C. Johnsoni, Busk, is sometimes found on one part of a 

 colony of C. fistulosa and absent in other parts ; next I found the shape 

 of the ovicellular opening equally unsatisfactory — for in most undoubted 

 specimens of C. fistulosa from Naples it occurs in some cells as a minute 

 orbicular opening, then it is elongate oval, and in other apparently 

 older ovicells a broad semicircular line is formed, which changes to 

 a transversely oval opening, resembling that figured by Hincks as a 



1 Quart. Jottr. Geol. Soe. August 1881, pp. 319, 320. 



