38 ON SOME POLYZOA FROM THE QtTEENSiAND COAST, 



28. Membranipora Eosselii, Audouin, 

 Eab. Holborn Island, 20 fathoms ; Port Denison, 5 fathoms. 



29. Membranipora Lacroixii, Savigny, fsp.J 

 Worn specimens, apparently referable to this species, from 

 both Holborn Island and Port Denison. 



30. Membranix3ora magnilabris, Bush. 



31. Membranipora cervicornis, S2). nov. 



Cells oval, margin but little raised, aperture protected by three 

 to five closely approximated, brandling, antler-like process, which 

 arise from one side of the cell and almost entirely hide the mouth ; 

 a strong vibraculum placed as in M. pilosa on the front wall of 

 the cell below the mouth. 



Eah. ? 



32. Biflustra armata, sj). nov., Plate I., fig. 7. 



Zoarium rigid, free, folded on itself. Cells very large, their 

 walls thick, defined by a narrow ridge which is most prominent 

 above. Usually a small, pointed avicidarium on the upper part 

 of the cell-margin at the side of the mouth. 



This species is distinguished from JB. delicatula, Busk (Crag. 

 Pohj%oa, p. 72. pi. i., figs. 1, 2, and 4), chiefly by the presence of 

 the avicularium and the absence of the serrate denticle. 



33. Biflustra crassa, sp. nov., Plate I., fig. 8. 

 The cells are somewhat irregular in size, oblong, surrounded 

 by a narrow rim, free from any trace of avicularia ; the membrane 

 punctate. 



34. Lepralia raalusii, Audouin, (sp.) 



Kah. Port Denison, Holborn Island, etc., commonly distributed 

 on the Australian coast from low-water mark to a considerable 

 depth. 



