106 



(Fig. 113 a), about 14 // broad, while their length in transverse 

 section is seen to be about 8 // only. 



The chromatophore is found in the upper end of the cells; 

 it has the common campanulate shape with a pyrenoid in the 

 middle. It is most developed in the epidermal cells, but it is in 

 the whole not especially large. 



KJELLMAX points out that judging from ELLIS and SOLAN- 

 DER'S figure 4, plate 22, it is not impossible that the plant which 

 here is called Corallina cylindrica is not the species we now call cy- 

 lindrica but the present one. In considering this figure, it certainly 

 can not be denied, that the length of the internodes are in pro- 

 portion to their breadth too short, and that in this respect the 

 figure agrees better with G. fragilis. But to state this with cer- 

 tainty an examination of the original specimen is necessary. 



This species has been found in a depth of about 12 meters 

 in more open sea. 



Only found once at St. Croix: off Frederikssted. 



Geogr. Distrib.: West Indies, Atlantic coast of South America. 



9. Galaxaura cylindriea (Solander) Kjellm. 



KJELLMAN, F. R., Om Floride-slagtet Galaxaura, p. 64. 

 Corallina cylindrica in ELLIS, J., and D. SOLANDER, The Natural History 

 of many curious and uncommon Zoophytes, 1786, p. 114. 



I have not collected this plant myself but in the Botanical 

 Museum, Copenhagen, several large specimens collected at St. 

 Croix by ORSTED are to be found. ORSTED does not give any 

 more definite information as to where he gathered the plant. 

 Some of the specimens reach a length of more than 12 cm; such 

 a large specimen of 0RSTED determined by KJELLMAN is also 

 found in Herb. ARESCHOUG in Stockholm. 



Regarding an eventual change of name I refer to what is 

 said about Galaxaura fragilis. 



Geogr. Distrib.: West Indies, Atlantic coast of South America. 



Sectio IV. BracJiycladia Sonder, Kjellman, 1. c. p. 67. 



10. Galaxaura marginata (Solander) Lamx. 



LAMOUROUX, J. V., Hist. Polypiers corall. flexibl., 1816, p. 264. KJELL- 

 MAN, Floride-slagtet Galaxaura, p. 77. 



Corallina marginata Solander in ELLIS and SOLANDER, Nat. Hist. Zoo- 

 phytes, p. 115, tab. 22, fig. 6. 



