ORDER V 



CHEILOSTOMATA 



351 



Vibracella Waters (Flustrellaria^ p.p., d'Orb.). Difters from Onychocella in liaving 

 a larger apeiture, wliich is often somewhat expanded below, and liaving vibracular 

 cells instead of avicularia. Cretaceons and Tertiary. 



(?) CumuUpora Münst. (Fig. 517). Zoaria irregularly massive. Zocecia partly 





CumuUpora angulata Münst, Oligocene ; Doberg, near Bünde. A, Zoarium, natural size. B, Upper 

 surface, enlarged. C, Vertical section, enlarged (after Reuss). 



recumbent, partly erect, and placed one above tbe other, so tliat tliey appear to form 

 tabulated tubes. Tertiary. 



Floridina Jullien. Like Onychocella but opesium trifoliate. Cretaceoiis to 

 Recent. 



SmitUpora Jullien ; Euritina Cann. Cretaceous to Recent. 



Family 9. Microporidae Smitt. 



Zooßcia liaving the front wall entirely calcareous ; usually with sharply elevated 

 margins, fissures or perforations. Cretaceous to Recent. 



Micropora Gray (Fig. 518). Zoaria encrusting. Zooecia witli 

 prominent raised margins : the front depressed, witli a Perforation 

 at each upper angle below the semicircular or rounded orifice. 

 Cretaceous to Recent. 



Steganoporella Smitt ; Setosella Hincks ; Rhagasostoma Kos- 

 chinski ; Gupularia Lam. ; Gargantua Jullien. Tertiary to Recent. 



Suborder B. ASOOPHORA Levinsen. 



■ '-^^ 



Fig. 518. 

 Micropora disparilis 



Compensation sac present, opening most often on the proximal side ^jo^g'jfg ;^anta^ari 



of the operculum, more rarely further bara Co.,'cai. Zocecia 



back through a median pore (ascopore). (af^J ^ Gabb"'and 



A calcified transverse har hetween the Hörn). 

 opercular and suh-opercular areas. 



Family 10. Microporellidae Hincks. 



Zoaria encrusting or erect^ foliated or dendroid. 

 Zooecial orifice more or less semicircular^ with the lower 

 margin entire ; a crescentic or circular pore on the front 

 wall usually just beneath the orifice. Cretaceous to Recent. 



Microporella Hincks (Fig. 519). Zoarium encrusting 

 or erect, bilaminar. Margin of zooecia not elevated. 



Fig. 519. 

 Microporella rudis (Reuss). 



Oli- 



SgJi.^''^'"°'"- ^l^P^^^"^f""«' Orifice with a straight, entire lower border, frequently 



