— 152 - 



we find a single hair or most often a bunch of several hairs up 

 to 5—7 or more together. In Reinke's plant the hairs were a 

 little swollen at the base like an onion, in my plant such a swel- 

 ling was most often not present at all, only seldom a lesser thick- 

 ness could be found. The wall-plasma was granulous and several 

 pyrenoids occurred in each cell, but the chromatophore itself was 

 indistinct in most of the cells, a few cells showed traces of division 

 in the characteristic way of 5—6 edged plates as found in Blasto- 

 physa rhizopus and in the other known species, Bl. arhiza Wille 

 and Bl. polymorphem Kjellm. 



Any division of the cells was not found and also no forma- 

 tion of zoospores. 



Even if our plant as mentioned above shows some few diffe- 

 rences from Reinke's description, on the other hand I find these 

 so small and as the plant upon the whole is so variable I think 

 it the most correct to refer our plant to Blastophysa rhizopus Rke. 



Only found once in Nemalipn Schrammi ; collected in the month 

 of February on the south coast of St. Croix: at Long Point. 



Endoderma viride (Reinke) Lagerh. 



G. Lagerheim, Bidrag till Sveriges algflora (Öfversigt af K. Vetensk. 

 Akad. Förh. 1883, p. 75). Entoeladia viridis Reinke in Bot. Zeit., 1879, p. 476, 

 tab. 6, fig. 6—9. J. H über, Ghaetophorées épiphytes et endophytes (Ann. Sc. 

 nat., 7. Sér., Bot. tome 16, p. 326). 



Specimens which seem quite to agree with Reinke's description 

 and figure were found in Chrysymenia Agardhii. 



Lat. cell. = 5—7 fi. 

 Long. cell. = 10 — 15 ^t. 



St. Jan: off America Hill in about 15 fathoms. 



