or CEETACEOUS TLAXTS. 



230 



Other Codiaces. — To tbe Codiaccoe should perhaps be added 

 the impression described by Loreiiz v. Liburnau as Uulimeda 

 Fiti/r/eri (Lorenz, 1807) from the Flj'soh. Further specimens of 

 this fossil were described by Lorenz in 1002, and the generic 



Text-fig. 2. — Cross-section through a living Halimeda for comparison with 

 tlie fossil lioueina Hochstetieri. X 24. After Steinmaun. 



name ITalimedides suggested for them. The specimens certainly 

 have the external appearance of a Ilaliineda, but they exliibit 

 no internal structui'e, and their plant origin does not appear to 

 be entirely beyond doubt. 



Suborder DASYCLADACE^JS. 



Genus NEOMERIS, Lamourouz. 



[Living genus.] 



A member of the Dasyoladaceas with iinbranched, cylindrical 

 stem, thickly encrusted. It consists of a thick-w;illed stem- 

 cell with no cross walls or constrictions, with densely packed 

 whorls of 32-80 side "branches." These carry usually one 

 terminal and short-stalked sporangium and two sterile para- 

 pliysis-like segments ^s'ith swollen ends. 



