31 



367 



Caulerpa serial arioid es is a very common species along the shores of the 

 Danish West Indies. Forma typica and brevipes are commonest in more exposed 

 localities, e. g. St. Croix: Limetree Bay, White Bay, behind Longreef etc. St. 

 Thomas: The harbour, St. Jan: The bay at Christiansfort etc. Forma longisela 

 is most common in lagoons, e. g. St. Croix: the lagoon of Christianssted, behind 

 Longreef in sheltered localities 



with sea-grass, in the Bovoni la- /îuil^ 



goon at St. Thomas etc. Forma y^W''^ 



Farlowii was only found once ^A ,', fi 



at St. Jan in Durloes Bay (leg. f{'\ ' 



Dr. H. Mortensen). 



Geogr. Distrib. The West 

 Indies, Florida, Red Sea, Ceylon, 

 Friendly Islands etc. 





7. Caulerpa Ashmeadi Harv. 



Harvey, Nereis Boreali-Americana, 

 p. 18. pi. 28, fig. A. 



J. Agardh, Till Algernes Systema- 

 tik, I, p. 16. 



This splendid species I have 

 found several times in the sea 

 around St. Thomas and St. Jan. 

 It is distinguished by its distichous, 

 sometimes spread, sometimes op- 

 positely placed ramuli. These 

 are cylindric-conical as the figure 

 12 shows, being evenly thicker 

 upward with the apex stubby, 

 rounded. The species seems to 

 vary very little, only regarding 

 the size there is some variation. 

 The largest specimens I have 

 found do not quite reach the size 

 of Harvey's plant, the smallest 

 were only 3 cm. high and the 

 whole plant both the rhizome and 

 the leaves were proportionally 

 small. 



'/; 



Fig. 12. Caulerpa Ashmeadi Harv. 

 In deeper water off America Hill (St. Jan). (About 1 : 1.] 



