462 PHORONIS 



that the Vermiformia, like the Pterobranchia, must in future be 

 grouped with the Hemichordata. He finds three well-defined 

 coelomic spaces corresponding with the epistome, the collar, and 

 the trunk, and also representatives of the collar pores, and is 

 further inclined to believe that structures representing the noto- 

 chord exist in Actinotrocha. 



Should Masterman's researches be confirmed, Phoronis will be 

 removed from its present isolated and enigmatical position, and 

 placed with Cephododlscus and Rhabdopleura amongst the Hemi- 

 chordata, which will be described in VoL VII. of this work. 



