A MONOGRAPH OF THE TERTIARY POLYZOA OP VICTORIA. 125 



13. I. lata, n.sp. PI. XVII., fig. 3. 



Brandies broad and very slightly convex or nearly flat. Zocecia in curved series 

 of about five on each side and usually an azygos one in the middle, long, distinct 

 throughout but closely connate, curved forwards, peristome produced and turned 

 forwards, surface smooth and destitute of raised pores. Dorsal surface in the only 

 specimen somewhat worn, but in the central part shewing longitudinal tubes (opened 

 ridges), and at the edges the same directed transversely outwards. 



M.C. 



Differs from I. milneana in the flatter branches, the more numerous and smaller 

 zooecia, the absence of raised pores, and the difference of the dorsal surface. 



14. i". conferta, n.sp. PI. XVIII., fig. 3. 



Branches rather broad, slightly convex in front. Zooecia in opposite, rather 

 close series, punctate, diverging from a central azygos one, indistinct except at the 

 extremities, where the peristome is a very little raised and tumid ; thyrostome large 

 and elliptical. Dorsal surface flat or slightly depressed, closely punctate, concen- 

 trically corrugated, and having occasional bundles of radical tubes. 



M.C. 



Filisparsa, D' Orbigny. 



Branches more or less dichotomously divided. Zocecia on one side irregularly 

 placed. Dorsal surface destitute of pores. 



Although I here adopt this genus, I have very great doubt as to its necessity. 



1. F. orakeiensis, Stol. PL XVIII., fig. 5. 



F. orakeiensis, Stol., Toss. Bryoz. Orakei Bay, p. 111. 



Branches narrow. Zocecia elongated, opening in obscure lines or irregularly 

 arranged, closely united and depressed; thyrostome slightly raised and turned 

 forwards, peristome slightly thickened. Dorsal surface finely punctate, longitu- 

 dinally sulcate and concentrically corrugated. 



M.C. 



Hornera, Lamx. 



Zoarium branched; branches distinct, usually anastomosing or connected by 

 cross-bars. Zooecia distinct, opening irregularly on one surface. 



