14 THE CRAG POLYZOA. 



y. With vibracula only. 



10. Canda. 



B. Cells disposed round an imaginary axis. 



Fam. 3. SdLICORNARIIBjE. 



* Surface areolated ; front of cell depressed, closed. 



11. Salicornaria, 



** Cells with a raised border ; front of cell partially open. 



12. Nellia. 



*** Cells ventricose ; peristome not produced. 



13. Onchopora. 



**** Cells ventricose ; peristome produced into a tube. 



14. TUBTJCELLARIA. 



§ II. INARTICULATiE. Polyzoarium continuous throughout. 



§§ 1. Flexiles. Texture more or less flexible. Polyzoarium erect, sub-erect, or decumbent and 

 repent, never adnate. 



A. Uniseriales. Cells disposed singly in linear series. 



Fam. 4. SCRUPARIID^. 



* Cell closed. 



15. Scrhparia. 



** Cell open in front. 

 a. Repent. 



16. Beania, Johnst. 



/3. Erect. 



17. Brettia, Dyster. 



B. Multiseriales. Cells disposed quincuncially in contiguous series. 



1. PlancB. Cells disposed in the same plane, 

 (a) LigulatcB. Branches or divisions narrow, ligulate. 

 a. With dorsal vibracula or sessile avicularia. 



Fam. 5. CABEREIDjE. 



* With dorsal vibracula. 



18. Caberea. 



