NORTH-ITALIAN BRYOZOA. O 



With regard to structure, the closure of Porina coronata and Le- 

 pralia syrmgopora by a plate with a tubule in the centre is some- 

 what surprising, as this structure was supposed to be exclusively 

 characteristic of the Cyclostomata. The plate is at some distance 

 above the oral aperture. 



Some of the erect Eschara-iorms have the zooecia at the side 

 opposite, others alternate ; and as this may be a useful specific 

 character, it has been mentioned in the diagnosis ; but it does not 

 appear to have generic value. 



The position of these Bryozoan beds has been fairly worked out. 

 Suess*, in 1861, placed them above the Priabona beds and below 

 those of Sangonini. They are the "P." of Bayant, or Upper Eocene. 

 Professors Hebert and Munier-Chalmas % have also examined the 

 stratigraphical position of the Yicentine beds, and they place the 

 " marne " of Brendola, &c., below the Crosaro and above the Gra- 

 nella beds, but as part of a " meme ensemble," considering the 

 Brendola beds as Upper Eocene and equivalents of those of Biarritz. 

 It will thus be seen that there is agreement in the views, and that 

 the Bryozoa may be considered as of Bnrtonian age and may be called 

 Upper Eocene. Erom their position the earlier writers called them 

 Miocene. To some of these points I may have to refer more fully 

 when dealing with the Cyclostomata. 



1. ? Caxenaria tenerrima (Eeuss). (PI. I. fig. 11.) 



Orisidia vindobonensis, Heuss, Eoss. Polyp. Wien. Tert. p. 54, 

 pi. vii. fig. 25. 



Unicrisia tenerrima, E-euss, Bryoz. von Crosaro, p. 279, pi. xxxiv. 

 fig. 7. 



This is clearly not Cyclostomatous, as Eeuss supposed, and, 

 although it differs in some respects from any living Oatenaria^ it 

 seems to find its place among them. It is not articulated, and the 

 connecting tube is broken off in various positions. The aperture is 

 terminal and seems to have a very wide sinus on the proximal 

 border. 



Loc. Yal di Lonte (JRss.) ; Brendola ; Montecchio Maggiore ; Eer- 

 rara di Monte Baldo. 



2. Catenicella septentrionalis, sp. nov. (PI. I. figs. 1-8.) 



The globulae are amphora- shaped, perforated on the front, with 

 an acute avicularium at each upper corner. Oral aperture nearly 

 orbicular, with the lower margin emarginate ; the region round the 

 aperture somewhat elevated. The dorsal surface is sometimes verj^ 

 slightly keeled. 



Erom Montecchio Maggiore there are several uni- and bi-globulae ; 

 but besides there is one with three zooecial cells (fig. 3), and another 

 with four (figs. 4, 5). This is most interesting, as showing that 



* Atti della Soc. Ital. di Sc. Nat. di Milano, 1861 ; and " TJeber d. Ghederung 

 des Vicent. Tert.," Sifcz. k. Akad. d. Wissenschaft., 1868. 



t *' Sur les Tert. de la Venet." Bull. Soc. Geol. France, ser. 2, vol. xxvii. 

 ^ Comptes Eendus de I'Acad. des Sc. vol. Ixxxv. p. 259 & pp. 320. 



