392 



Chrysymenia J. Ag. 



In some introductory remarks to a former paper of mine*) 

 concerning this genus I have pointed out that the bursting of 

 the thallus, as described by SCHMITZ and HAUPTFLEISCH, and the 

 peculiar way in which, according to these authors, the gland- 

 cells in the cavities of the Chrysymenias are supposed to come 

 into existence does not hold good in case of a more thorough ex- 

 amination. In a paper of the late Prof. KUCKUCK**), whose early 

 death is sincerely to be regretted, this prominent investigator 



Fig. 375. Chrysymenia Agardhii Harv. 

 a, transverse section of the thallus (about 80:1); 

 b, gland-cell with filaments (about 350:1). 



quite agrees with me regarding the development of the cavities 

 and glands of the Chrysymenias. 



In the same paper I also mentioned that the shape of the 

 gland-cells and their arrangement upon the innerside of the large 

 wall cells seem to be of much specific value. 



1. Chrysymenia Agardhii Harv. 



HARVEY, W. H., Nereis Bor.-Americana, Part. IV, p. 189, tab. XXX A. 

 AGARDH, J., Epicrisis, p. 322. BORGESEN, F., Some new or little known West 

 Indian Florideae, II. (Bot. Tidsskr., vol. 30, 1910). 



*) B0RGESEN F., Some new or little known West Indian Floridese, II (Bo- 

 tanisk Tidsskrift, vol. 30, 1910, p. 181). 



**) KUCKUCK, P., Beitrage zur Kenntnis der Meeresalgen, 13, Untersuchun- 

 gen liber Chrysymenia (Wiss. Meeresuntersuchungen. Neue Folge, V. Bd., 

 Abt. Helgoland, Oldenburg, 1912). 



