14 THE CRAG POLYZOA. 



y. With vibracula only. 



10. CANDA. 



B. Cells disposed round an imaginary axis. 



Fam. 3. SALICORNARIIVJ3. 



* Surface areolated ; front of cell depressed, closed. 



11. SALICOENARIA. 



** 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. TUBUCELLARIA. 



II. INARTICULATE. 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. SCRUPARIA. 



** Cell open in front. 

 a. Repent. 



16. BEANIA, Johnst. 



/3. Erect. 



17. BRETTIA, Dyster. 



B. MULTISERIALES. Cells disposed quincuncially in contiguous series. 



1 . Fiance. Cells disposed in the same plane. 

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

 a. With dorsal vibracula or sessile avicularia. 



Fam. 5. CABEREID&. 



* With dorsal vibracula. 



18. CABEKEA. 



