420 



thailus in small, short, densely matted growths. Plurilocular spo- 

 rangia were observed in April. 



Found hitherto only on Str. : near Thorshavn (!). 



101. M. vulgare Thur. Sauvageau, Sur quelques Myrionéma- 

 cées, p. 25. 



Specimens exactly agreeing with Sauvageau's exhaustive descrip- 



tion and figures have been found epiphytic on Monostroma fuscum. 



This species bore both unilocular and 



plurilocular sporangia in July. 



Found hitherto only on Str.: in Sundene 

 between Thorsvig and Kvalvig (!). 



102. M. Corunnæ Sauvageau, Sur quel- 

 ques Myrionémacées, p. 77. 



Occurred on the lamina of Laminaria 

 digitata as small, short, dense, roundish, 

 cushion-like growths. In fig. 80 is shown a 

 portion of the plant with plurilocular spor- 

 angia (£>), a hair (a), and a small portion of 

 the basal disc (c). The plant bore plurilo- 

 cular sporangia in May which were 5 fi 

 thick. Professor Sauvageau to whom I 

 sent a preparation corroborates my deter- 

 mination. 



Found only on Sj'd. : Famien (!). 



103. M. foecundum (Stromf.) Sauvageau. 

 Phycocelis foecunda Stromfelt, Algæ novæ 

 quas ad litora Scandinaviæ indagavit, tab. 3, 

 fig. 5 (Notarisia No. 9, 1888); Sauvageau, Sur 

 quelques Myrionémacées, p. 10. 



To this species I have referred a small alga which occurred 

 as a short, dense covering on the lamina of Laminaria hijperborea. 

 It closely resembled Reinke's var. seriata (Atlas, tab. 16, figs. 5 — 12), 

 but the plurilocular sporangia, unlike what is said to be the case 

 in Reinke's variety were occasionally divided by longitudinal 

 walls. Reinke writes with reference to his variety (1. c. p. 19). 

 »In der Mitte der Scheibe entspringen farblose Haare und kurze 

 Assimilationsfaden aus den Basalzellen, die Assimilationsfaden 

 wandeln sich der ganzen Lange nach durch Quertheilung der 



Kig. 80. Myrionema Corunnæ 

 Sauvag. Compare text. 370:1. 



