A MOXOGRAPn OP THE TEllTIARY POIAZOA OF VICTOKIA. 131 



entire ; surface of zoa;cia and intervening spaces finely c^ranular or transversely 

 corrugated. Ocecium a distinct, rounded inftatiou of the zoarium, closely punctate. 



M.C. Livino;. Victoria. /n^'"^^ ''^'^x 



3. D. reef a, n.sp. PI. XX., fig. 6. ' '^~::UcnV~i^''' 



Zoarium adnato. Zooccia indistinct, except at tlic extreme anterior extremities, 

 which are turned directly forwards ; thyrostonie circular, with a thick peristome ; 

 surface of zoarium and zooccia granular, finely corrugated. 



M. 



Distinguished by tlie total obliteration of the junction of the zooecia except at 

 the anterior extremities, Avhich are turned forwards, which, with the peristomes, 

 seem to rise abruptly from a continuous, finely-granular and faintly rugose surface. 



4. D. torqiiata, Kirkp. PI. XX., fig. 7. 



BicUastopora torqnaUt, Kirkp., A.M.N.H., 6, II., 15. 



Of this the only specimen I have is the extremity of tlie l)ranch figured. It is 

 narrow and consists of two layers of zoo3cia placed back to l)ack ; the zooecia are 

 distinct, very long and narrow, closely connate except at the extremities, which 

 are free, abruptly curved forwards and project as long peristomial tubes ; the 

 decumbent j^ortions are closely and distinctly punctate, the erect parts smooth and 

 glossy or finely-ringed ; the peristomial opening circular and entire. 



M.C. Lh'ing. Victoria. 



I have beautiful recent specimens from Mr. Wilson dredged at Port Phillip 

 Heads, shewing the whole structure of the species. In these the branches rise from 

 an expanded, crustaceous, discoidal base, and are in reality formed l)y a double layer 

 of zocecia. D'Orbigny introduced the genus Bkliastopora for those Blastopores 

 forming narrow bilaminate branches, in the same way as Blainville's Mesentertpora 

 includes the bilaminate foliaceous forms. These distinctions, however, cannot be 

 considered of generic value, and the species so constituted can at most only be 

 referred to sub-genera. Two species of the latter form, D. capUata and iiistata, the 

 former reaUy intermediate betAveen the sub-genera, occur living at Port Phillip 

 Heads. 



Liripora, JIcG. 



1. L. bicolor, McG. PI. XX., fig. 8. 

 (For description see Appendix.) 



S2 



