SYNOPTICAL CLASSIFICATION. 15 



** With dorsal avicularia. 



19. AMASTIGIA. 



ft. Avicularia, when present pedunculate ; no vibracula. 

 Fam. 6. BICELLAR1ID.E. 







* Cells turbinatc, distant ; oral and other spines. 



20. BICELLARIA. 



** Cells contiguous ; unarmed. 



21. HALOPJIILA. 



*** Cells elliptical, contiguous; with pedunculate avicularia. 



22. BUGULA. 



(b) Foliacete. Polyzoarium foliaceous, expanded, entire or lobed. 



Fam. 7. FLUSTRID^!. 

 a. Cells contiguous. 



* In two layers. 



23. FLUSTEA. 



** Cells in a single layer. 



24. CARBASEA. 



B. Cells discrete. 



25. DIACHOKIS. 



2. CylindricfE. Cells disposed around an imaginary axis. 



Fam. 8. FARCIMINARIID^. Corneous ; a large aperture. 



26. FAKCIMINAKIA. 



3. Geminates. Cells in pairs. 



Fam. 9. GEMELLARIIDX. 



(a) Armatce. Furnished with avicularia. 



27. NOTAMIA. 

 (lj) Inarmatee. 



* Cells back to back in the same plane. 



28. GEMELLARIA. 



** Cells back to back, the alternate pairs at right angles. 

 f Each pair arising from that immediately below. 



29. DIMETOPIA. 



ft Each pair arising from the next but one below. 



30. CAI/WELLIA. 



