A MONOGRAPH OF THE TERTIARY POLTZOA OP VICTORIA. 121 



in longitudinal grooves. Ooecia dorsal, in the continuity of a branch, closely covered 

 with pits or pores, and with a small ooecial opening on one side. 



S.P. ; M.C. ; Belmont. Fossil, Orakei Bay, New Zealand. 



Var. baimsdalei. 



Zooecia usually four in a series, the innermost being quite or almost in the 

 central line, which is very little raised, and has no distinct ridge. 



B. 



This is an abundant species, especially in the Schnapper Point and Muddy 

 Creek deposits. The branches usually divide dichotomously. Secondary branches 

 occasionally spring from the sides of a main stem at right angles, or also slightly 

 turned upwards. 



The variety baimsdalei differs in the absence of the central smooth ridge, and 

 in the greater numbor of zooecia in the scries. The innermost zooecium is almost in 

 the centre of the branch, but it cannot be said to be one of an azygos series, the 

 presence of which is the foundation of Jullien's proposed genus Tervia. The zooecia 

 are also farther apart and more distinct towards the thyrostomes. 



Smitt (Moridan Bryozoa, Pt. I., p. 6) refers a Eloridan specimen to this 

 species, but the identification admits of great doubt. 



2. I. radians, Lamk. PI. XVI., fig. 18. 



Hefepora radians, Lamk. Anim. Sans Vertebres, Ed. 1st, II., 183 ; Ed. 2nd, 

 II., 279 ; BrusselPs Ed., I., 250 ; Idmonea radians, Busk, B.M.C., III., 11 ; 

 id., C.P., II., 10 ; McG., P.Z.V., 68 ; Waters, Q.J.G.S., 1884, 684 ; ? Stoliczka, 

 I.e., 116. 



Zoarium rising from a narrow base, the branches dividing dichotomously and 

 usually spreading in a radiating manner, raised in front and flat behind. Zooecia in 

 alternate series of 1-4 ; when more than one in a series the inner the longest ; surface 

 fribrillate and perforated. Dorsal surface longitudinally sulcate, the sulci occupied 

 by pores. 



B. Living. Victoria. 



Of this, which is a not uncommon recent species, I have only the figured 

 specimen from Bairnsdale. In it the zooecia are mostly two, but sometimes three in 

 a series, in the latter case the outermost being shorter and having the aperture 

 separated and not produced, while the inner pair project forwards and are closely 

 united. 



R 



