2G8 RECORDS OF THK AUSTRALIAN MUSKUM. 



Selenaria punctata, Ten. Woods. 



,, maculata, Busk. 



,, concinua, Ten. Woods 



Caleschara denticulata, McGil. 

 Micropora coriacea, Esper, sp. 

 Cribrilina radiata, Moll., sp. 

 Microporella ciliata, Linn., sp. 

 Adeona mucionata, McGil. 



,, parvipuncta, McGil. 

 Schizoporella flabellata, Maplestone. 



,, cecilii, Audouin, sp. 



Bipora augidopora, Ten. Woods. 

 Smittia retictdata, McGil. 

 Jfucronella praestans, Hincks. 

 Rhyncopora longirostris, McGil. 

 Porina gracilis, Milne Ed., sp. 

 Cellepora fossa, Has well, sp. 

 Lagenipora nitens, McGil. 

 Lekythopora hystrix, McGil. 

 Idmonea contorta, Busk. 

 Homera foliacea, McGi 1 . 

 Lichenopora holdsworthii, Busk, sp. 



IT. — Descriptions of New Species. 



Bipora biarmata, sp. nov. 

 (Plate lxxv., figs, la, lb.) 



Zoarium conical, 2 mm. high, l - 5 mm. broad at the base ; apex 

 rounded. Zooecia immersed, in directly vertical series.^Thyros- 

 tome elliptical, 01 to 0*15 mm. high; O07 to (H mm. broad, 

 elevated above the surface with a deep sinus in the lower lip. 

 Peristome slightly raised. An avicularium on each side of the 

 lower part of the thyrostome, bearing an acute mandible pointing 

 horizontally outwards and having a cross-bar, with a central 

 ligula, near the base. Base of zoarium flat, with uneven surface 

 but with no indication of the position of the zooecia ; avicularia 

 similar to those on the front of the zooecia scattered about. 



Bipora multiarmata, sp.nov. 

 (Plate lxxv., figs. 2a, 2b.) 



Zoarium conical, 2'2 mm. high, 1 # 7 mm. broad at the base. 

 Zooecia immersed, in vertical, but slightly slanting .series. 

 Thyrostome 01 to - 15 mm. high; 0*07 to 0T broad, raised, 



