Fig. 33. A and B, Cymopolia barbata (L.); A, transverse section of the calcareous cylinder. 

 B, verticillate branches and sporangium after removal of the calcareous matrix (A 

 and B after Munier-Chalmas). C and D, Acicularia Andrussowi Solms (C, after Andrus- 

 sowi; D, after Solms). E, Acicularia Miocenica Reuss; section of a spicula (after Reuss). 

 F and G, Acicularia sp. (after Carpenter), Fx40; Gx20. H, Acicularia Schencki (Mob.) 

 (after Solms). I, Acetabularia Mediterranea Lamx. ; section of the cap (after Falkenberg). 

 K and L, Ovulites margaritula (Lam.) (after Munier-Chalmas); K slightly enlarged; L, a 

 piece of the thallus more highly magnified. M, Corallina barbata (L.) (after Ellis, nat. size). 

 N, C. barbata (L.); the surface of the thallus; magnified. 0,Fenicillus pyramidalis (Lamx.) 

 (after Lamouroux, nat. size). 



