184 Proceedings of the Royal Society of Victoria. 



The almost, purely Australian family Catenicellidae is very 

 numerously represented, 79 species being recorded, and the 

 number would no doubt be still further increased if a more 

 diligent search were made for them ; though it is surprising that 

 so many specimens have been already found when their minute- 

 ness is considered, for the material I have received from several 

 deposits had already been washed and cleaned, and the Cateni- 

 cellidae had consequently vanished ; this will account for their 

 not being recorded from some of the localities. The fossil Cel- 

 lariidae are also more numerous than the recent forms, and the 

 Meinbraniporidae, Lepraliidae, Schizoporellidae and Smittiidae 

 are also very largely represented. The Calwelliidae, Cellularii- 

 dae, Bicellariidae and Flustridae, being free growing and only 

 slightly calcified, occur much less frequently in the deposits than 

 do the more highly calcified and encrusting forms. The number 

 of Celleporidae are probably much greater than is recorded, 

 because their nature is such that, although specimens can be 

 assigned to that family, it is in comparatively few cases they are 

 sufficiently well preserved to permit of definite description. 



Fossil Species now Living in America and Africa. 



Catenicella taurina. Busk, South Africa. 

 Vittaticella sacculata. Busk, South Atlantic. 

 Cellaria biseriata. Map., North Atlantic. 



Amphiblestrum annulus, Manz., sp., Falkland I. and Kerguelen I. 

 Cupularia canariensis. Busk, Canaries and Florida. 

 Farcimia oculata. Busk, Florida. 



Thalamoporella rosieri, Aud., sp., S. America, Florida. 

 Escharipora stellata, Smitt, Florida. 

 Lepralia mucronata, Smitt, North Atlantic. 

 L. pertusa, Esper., North America, Europe. 

 Schizoporella phymatopora, Reuss, North Pacific. 

 S. ridleyi, McG., Patagonia. 



Porella concinna. Busk, North America and Europe. 

 Smittia nitida, Verrill, Africa, North America and Medi- 

 terranean. 

 Aspidostoma crassum, Hiucks, Patagonia, Falkland I. 

 Cellepora albirostris, Smitt, sp., Florida. 



