A MONOGRAPH OP THE TERTIARY POLYZOA OP VICTORIA. 129 



spaces not distinctly marked ; anterior extremity of zooecimn prominent ; thyro- 

 stome entire, but the much-produced peristome deeply laciniated. Dorsal surface 

 with thick, prominent, tuberculated fibrillar, and regular series of elongated pores in 

 the narrow sulci. 

 C.B. 



11. H. tuberculata, n.sp. PI. XIX., fig. 8. 



Branches rather slender, rounded ; anterior surface with numerous tubercles or 

 short transverse ridges, usually not fibrillate, but sometimes divided by sulci into 

 longitudinal ridges; thyrostomes small, circular, with thickened and slightly-produced 

 peristomes. Posterior surface fibrillate, the fibrillar sometimes wanting, the ridges 

 with numerous tubercles or short transverse ridges frequently stretching across the 

 situation of the sulci, which are then obliterated. 



B. ; C.B. 



12. H. prominens, n.sp. PI. XIX., fig. 9. 



Zoarium small ; branches slender, dichotomously divided. Anterior surface 

 with prominent tuberculated ridges, the intervening zooecial spaces much narrowed 

 at the extremities. Zooecia prominent ; thyrostome circular, the much-produced 

 peristome entire or more prominent on either side ; a small pore in the space 

 immediately above the thyrostome. Dorsal surface with thick, prominent longitu- 

 dinal transversely nodulated or ridged fibrillse, the narrow sulci with a few small 

 pores. 



M.C. 



Family Tubuliporxile. 



Zoarium encrusting or adnate, or partially or wholly erect ; when erect, 

 bilaminate or cylindrical. Zooecia tubular, when zoarium erect, opening on two 

 surfaces or all round. No intercellular cancelli. Ooeeium an inflation of part of 

 the zoarium. 



Tubulipora, Lamx. 



Zoarium adnate, irregularly shaped, frequently lobed or flabellate. Zooecia 

 elongated, tubular, distinct, partially free, arranged in more or less diverging series. 



1. T. sp. 



There is a portion of a colony of a Tubulipora on the same fragment of Rete- 

 pore as Stomatopora mceandrina, but not sufficiently perfect for identification or 

 description. 



B. 



s 



