ON FOSSIL POLTZOA. 107 



species — V. muricata, omata, and raripora. Through the kindness of 

 Prof. Ferd. Roemer, of Breslau, I have received tracings and descriptions 

 of D'Eichwald's species. The author says that ' the Polyzoary is micro- 

 scopically cylindrical or angular, with from four to twenty corners, fixed 

 by the base, simple or ramose, and that the branches are of the same as 

 the principal stem. The genus is rarely found in the Greywacke, in the 

 Carboniferous limestone, and is more frequent in the Cretaceous and 

 Tertiary strata.' ' Vincularia muricata is very much like M'Coy's 

 V. megastoma, and V. omata appears to be the more perfect form of 

 V. muricata — all allied to, if not identical with, Ehabdomeson (Millepora) 

 gracile, Phillips. V. raripora, D'Eich, is different from the others, but 

 the horizon (Carboniferous) is the same. The author says : ' This very 

 graceful polyzoon is in fragments of two lines long by a quarter of a line 

 in width. It is cylindrical, bi- and tri-furcating. The cells elongate, 

 oval, rather deep, almost flat ; there are from three to four in a trans- 

 verse row, separated from each other by a sufficiently wide space, which is 

 sometimes of the width of the cells themselves.' I know of no British 

 Carboniferous fossil that would answer wholly the description of 

 D'Eichwald. In the peculiar mode of branching and bifurcating the 

 nearest approach to it is the Eypltaxmopora of Mr. Robert Etheridge, jun., 

 but in this fossil there are so many peculiar features that, if these had 

 been seen by D'Eichwald, he would have directed attention to them. 



In his various writings Dr. A. E. Reuss adopts the genus Vincularia, 

 Defrance, for certain forms having a peculiar ' Escharidean character,' and 

 one characteristic of Vincularia, of Reuss, is that the cells are arranged 

 round ' an imaginary central axis ' ; but Dr. Reuss honestly states 

 ('Pakeon. Stud.') that he is unable to distinguish between Vincularia 

 and the JEscharido3. 



As, however, other authors may have some doubts about the Gellariidce 

 character of some of the species of Vincularia of the Cretaceous and 

 Tertiary epochs described by Hagenow and Reuss, I shall for the present 

 keep the genus distinct, placing against the described forms those 

 synonyms which seem to be the most likely to be correct, or otherwise 

 giving the references and restrictions furnished by the authors them- 

 selves. Mr. Hincks, however, upon reconsideration," suppresses the name 

 T utcularia as a distinct genus for recent species. I merely retain the 

 name for fossil species for the convenience of future workers, and because 

 many of the forms described are not in my cabinet 



Genus Vincularia, Defr. = Glauconome, (part) Goldfuss. 



Division Urceolata, Haorenow. 



Maestricht Beds. 



22. Vincularia areolata, Hagenow, Tab. VI. fig. 12, 'Die Bryozeen 



der Mastrich. &c.' 1851. 



23. Vincularia bella, Hagenow, Tab. VI. fig. 13, 'Die Bryozeen 



der Mastrich. &c.' 1851. 



24. Vincularia canalifera, Hagenow, Tab. VI. fig. 14, ' Die Bryozeen 



der Mastrich. &c.' 1851. 



25. Vincularia procera, Hagenow, Tab. VI. fig. 15, 'Die Bryozeen 



der Mastrich. &c.' 1851. 



26. Vincularia Goldfussii, Hagenow, Tab. VI. fig. 15 = Cellaria 



ibid., Hag. 



1 Zethtva conica, pi. 2. 



