144 A MONOGRAPH OP THE TERTIARY POLTZOA OP VICTORIA. 



1. //. mOiilosa, McG. PI. XXI., fii^-. It. 



Zoai'iuiii cyliiuh'ical. iVpertiires of zoa'cia and ol' cancelli almost confined to 

 swollen annular nodes placed at intervals on tlu^ branch. Annul! separated from 

 one anoUuM" by a distance about equal to tlieir own diameter. Zoo?cia in each 

 annulus very numerous, irregnlarly disposed, a[)ertiires subcircular, and ajjproxi- 

 mnti'ly e([ual in size. Cancelli very nnmerous and oF various siz(>s, cirenlar, ovate 

 or polyh(;dral. ]?otli /o(Pcial apertures and cancelli with thickened cord-like 

 marsi'ins, which slightly ])roiect and leave small i)olyg-onal areas between them. 

 Apertures of zotecia and of cancelli at times closcul at the outer surface by a 

 calcai-eous plate, pierced by numerous large circular pores. Internodes marked out 

 into irregular ovate or (donga to areas which are pierced by numerous large pores, 

 and ai-e bounded by slightly-elevated broad ridges devoid of pores. One or two 

 large ajjertures, possibly zooecial, and a large number of smaller apertures occur in 

 each internode. The porous areas apparently mark the ])()siti(in of closed zoceeinl 

 apertures in the internodes. 



M.C. Upper beds at Maude (T.S.II.). 



A broken specimen in my f)wn collection shows that th(> zooccia curve upwards 

 and outwards, to oj)en on the surface of the nodes, and that the Avails are pierced 

 l)y a number of large circular ])ores, placed each at the bottom of a broadly rounded 

 depression, the intervening spaces being minutely granular. 



2. U. pisiformis, McG. PI. XXL, fig. 15. 



Zooecium nearly spherical, apparently free. Surface closely covered by 

 rounded polygonal apertures of varying size, so that it is not evident in many cases 

 which arc zocccia and which are cancelli, as all gradations in size ai'c present. 

 Pounding walls of apertures stout. The apertures of all sizes usually closed by a 

 concave porous ])lnte ])laced slightly within the mouth. 



S.P. 



Family PRONDiPORiDiE. 



" Zoarium massive, stipitate, simple or ramose. Zoa'cia tubxdar, connate, 

 continuous from the base, aggregated into fasciculi, opening only at the extremities 

 or in regular sci-i<'s at the sides of the branches. No cancelli."— (McG.). 



Sujiercytis, B' Orb. 



"Zoarium stipitate; ca])itnlum expanded, fiat or cupped, witli numerous 

 furcate or trilid lascieidi proj(>eting round Ihc border. Fasciculi comjiressed, 



