10 

 Endoderma Lagerh. 



Endoderma virido (Reinke) Lagerh. 



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

 Akad. Fork. 1883, p. 75). J. Huber, Chaetophorees epiphytes at endophytes 

 (Ann. Sc. nat., 7. Ser. Bot. tome 16, 1892, p. 326). 



Entodadia viridis Reinke in Bot. Zeit., 1879, p. 476, tab. 6, figs. 6 — 9. 



Specimens which seem quite to agree with Reinke's descrip- 

 tion and figure were found growing in Chrysymenia Agardhii. 



Lat. cell. = 5—7 n. 

 Long. cell. = 10 — 15 /i. 



St. Jan: of! America Hill in about 15 fathoms. 



Geogr. Distrib. Atlantic coasts of Europe and N.America, West 

 Indies. 



Ulvella Crouan. 



1. Ulvella Lens Crouan. 



P. L. et H. M. Crouan, Notes sur quelques especes et genres nou- 

 veaux d'algues marines de la rade de Brest (Ann. Sci. natur., 4. Ser., Bot., 

 Vol. XII, 1859, p. 288, pi. XXII, figs. 25—28). Huber, J., Contributions 

 a la conn, des Chaetophorees epiphytes et endophytes (Ann. Sci. nat., 7. Ser., 

 Bot., vol. 16, 1892, p. 294, pi. XI, 'figs. 4—6). 



Specimens which seem to agree fully with the description 

 of Huber (1. c.) were found growing epiphytic upon Chwtomorpha 

 antennina. 



The cells in the periphery of the discs were 3 — 4 // thick 

 and 15 — 20 // long; the more roundish cells in the central part 

 of the disc had a diameter of 8 — 10//; they were, as also men- 

 tioned by Huber, often divided into 2 or 4 cells. 



The chromatophores are very homogeneous and contain 

 no pyrenoid. 



Found only once, St. Thomas: The Harbour. 

 Geogr. Distrib. Europe, North Carolina. 



Pringsheimia Reinke. 



1. Pringsheimia scutata Reinke. 



Reinke, Atlas deutscher Meeresalgen, pi. 25; Algenflora p. 81. 



I have found a few specimens, growing epiphytic upon Bo- 

 strychia tenella, of a green crustaceous alga which most probably 

 belongs to this species. But the material was so scarce that 



