or CEETACEOUS PLANTS. 



241 



1897. Muniei-id hactmica, Ilauptfleiscli iu Eugler & Prautl, Pflan- 



zenl'amil., p. ")(). 

 1906. Munieria cf, haconica, Os\Yald, Gi'ol. Armenia, plate to fiice 



p. 231. 



Tliis alga i.s cylindrical, from 5-7 ram. loDg, with a blunt 

 apex. It is composed of numerous symmetrical, similar zones, 



Text-Bg. i. — Munieria haconica, t. Ilantlien. A. Cros9-seetioii showing 

 k, chalky skeleton, v, Terticillate canals. H. Longitudinal section, 

 c, central canal. C. Restoration of a snjall part of the alga: c, axial 

 canal; c, Tertlcillate canals which contained the liriug portion of the 

 alga. The perforated outline represents the calcareous skeleton, 

 w, with spaces, A, in it. Alter Deecke. 



each about 0-5 mm. thick, so that there are 10-11: of these in a 

 specimen. The diameter is about 0-75 mm., and each zone is 

 perforated by about a dozen round pores. In good specimens 



