41G 



CYCLOSTOMATA. 



Crisia eburnea. 



Suborder II.— CYCLOSTOMATA, Busk 



Cyclortomata, I3nsk : Smitt : &c. 

 TuBULiPORiNA, Milne-Edwards : Johnston : &c. 

 AuLOPORiNA (part.), Elirenberg. 

 Myriopouina (part.), Ehrenberg. 

 Cerioporina (part.), Bronn. 

 Ckntrifuginea (part.), D'Orbigny. 



Group i. Rabicellata, D'Orbigny. 



Eadicellata, D'Orbigny (1850) : Smitt. 

 Articulata s. radicata, Buslv (1859), Crag Polyzoa. 



ZoARiuM erect, articulated, attached by radical tubes. 



