BETOZOA FEOM NEAE CAPE HORN. 231 



moderate distance from the calcareous closure ia Entalophora 

 regularis, MacGrill. At first the wall is entire, completely sepa- 

 rating the upper and lower part of the zocecial tube ; at another 

 stage it becomes funnel-shaped, and clearly the tentacles are 

 then able to pass through it. This is one of the most important 

 facts concerning the anatomy of the Cyclostomata that we have 

 come across for a long time, and one requiring an examination 

 in other Cyclostomata, for we are not yet able to explain its 

 meaning, or its bearing on the calcareous " closures." 



The present paper shows that the geographical distribution of 

 several species is greater than had been previously supposed, 

 and the following species were first described in the ' Challenger' 

 reports : — 



Memhraniporafalcifera, Busk, described from off the Argentine. 



Cellaria variahilis. Busk, from Patagonia and Kerguelen 

 Island. 



Tlialamoporella lahiata, Busk, off the Argentine. 



Cribrilina latimarginata, Busk, off the Argentine. 



Saswellia auriculata, Busk, Tristan da Cunha and Cape of 

 Grood Hope. 



Turritigera stellata, Busk, off the Argentine and Cape of Good 

 Hope, also recently found in the Antarctic. 



[Since this communication was read an important paper by 

 Dr.L. Calvet, "Bryozoen," Hamburger Magalhaensische Sammel- 

 reise, 1904, has appeared, and I have added references without 

 discussing any points raised. 



I had decided to wait until Dr. Calvet's description of the 

 Magellan collection was published, but when he was unable, 

 through illness, to continue work for a time, it seemed better 

 not to postpone the publication of mine any longer. Through 

 Dr. Calvet's illness I was not aware that his paper had been 

 completed and placed in the printer's hands. 



My memoir on the Bryozoa collected in the Antarctic by the 

 ' Belgica ' was distributed very shortly after the completion of 

 the description, though before the publication, of the Hamburg 

 Magellan collection, and it has therefore happened that we have 

 attain, in some cases, both been dealing with the same species 

 without either of us having the least wish to forestall the 

 other.] 



