A MONOGRAPH OF THE TERTIARY POLTZOA OF VICTORIA. 12] 



in longitudinal groovos. Oa^cia dorsal, in the continuity of a liraneli, closely covered 

 with i^its 01" pores, and with a small ooecial opening on one side. 



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



Var. bairnsdalei. -',7\T'rrr. 



Zooicia usually four in a series, the innermost being quite or almost in the ^' I't ^-^J 

 central line, which is very little raised, and has no distinct ridge. ^.:l<^£CNi3}:'^ 



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 varietv bairnsdalei differs in the absence of the central smooth rid^e, and 

 in the greater numbpr of znoecia in the series. The innermost zocecium 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 zocecia 

 are also farther apart and more distinct towards the thyrostomes. 



Smitt (Eloridan Bryozoa, Pt. I., p. G) refers a Floridan specimen to. this 

 species, but the identification admits of great doubt. 



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



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

 II., 279; Brussell's 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. Zoojcia in 

 alternate series of 1-1 ; 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 iTncommon recent species, I have only the figured 

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

 a series, in the latter case the outermost being shorter and having the apertiu-e 

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

 united. 



R 



