40 Dansk Botanisk Arkiv, Bd. 2. Nr. 2. 



mark and somewhat below. It was gathered in February and 

 was then sterile. 



St. Croix: at Northside estate. 



Geogr. Distrib. Canary Isles, Indian Ocean? 



Fa m . 8. Sphacelariaceæ. 

 Sphacelaria Lyngb. 



1. Sphacelaria trihuloides Menegh. 



Meneghini, Lettere al Corinaldi, 1840, p. 2, No. 1 (non vidi). 

 Sauvageau, C, Remarques sur les Spacélariacées. p. 123 and p. 237. 

 (Extr. du Journal de Botanique, 1900—1904). 



Vickers, A., Phycologia Barbadensis, Part II, pi. XXVI. 



Specimens occurred with propagula and plurilocular sporangia. 



This species is found growing upon stones, shells and similar 

 objects. 



It occurs in the upper sublittoral and in the littoral region 

 and in both exposed and sheltered places. 



St. Croix: Northside. St. Thomas: The Harbour, Water Island, 

 Store Nordside Bugt. 



Geogr. Distrib. All warm and temperated seas as far north as 

 Scotland in the Atlantic. 



2. Sphacelaria furcigera Kiitz. 



Kutzing, Fr., Tabulæ Phycologicæ, vol. V, p. 27, tab. 90, fig. II. 

 Sauvageau, C, Remarques sur les Sphacélariacées, p. 145. (Journal de 

 Botanique, vol. XV, p. 1901). 



Vickers, A., Phycologia Barbadensis, Part II, pi. XXV. 



Specimens were found with plurilocular sporangia and 

 propagula. 



The plant occurred partly upon stones etc. twisted among 

 other small algæ e. g. Struvea anastomosans, partly also upon 

 larger brown algæ, Sargassum etc. 



It grows in the littoral and upper sublittoral region and is 

 collected in exposed as well as more sheltered places. 



St. Thomas: St. Nordside Bugt, the Harbour. 



Geogr. Distrib. All warm and temperated seas as far north as 

 Heligoland and the Færoes. 



