168 Mr George W. Traill on the [sess. lh. 



tide level. Annual, summer and autumn. Fruit 

 in July and August. 



120. Myriotrichia clavccformis, Harv. 



At 7, 10, 12, &c., in pools from near high- water 

 mark to about half-tide level ; epiphytic on Algae. 

 Annual, spring and summer. 



121. Myriotrichia filiformis, Harv. 



Associated with the preceding. Annual, spring and 

 summer. 



122. Nitophyllum laceratum, Grev. 



Cast ashore ; sometimes on Laminaria Cloustoni. 

 Annual, May to Sept. Fruit in July and August. 



123. Nitophyllum punctatiom, Grev. 



Cast ashore, rare. Dredged by Dr M'Bain off the 

 Lady's Tower. Annual, May to September. 

 Fruit in Jidy and August. 



124. Odonthalia dcntata, Lyngb. 



At 9, on stones and rocks from a little below low- 

 water maik to deep water, Perennial. Fruit in 

 winter. 



125. OsciUatoria suhuliformis, Thw. 



Associated with Leptothrix radians on the dark walls 

 of the Devil's Cave, near high-water mark. 



126. Petrocelis cruenta, J. Ag. 



Common on rocks near low-water mark. Perennial. 

 Fruit in winter. 



127. Phlceuspora hrachiata, Bornet. 



At 2, 7, &c., on Rhodymenia palmata, in pools between 

 tide marks. Annual. Fruit, June, July, August. 



128. ridoiOHpora tortilis, Aresch. 



At 3, 4, 5, 10, in pools at about half-tide level. 

 Annual, March to Sept. Fruit in July and August. 



129. Phyllitis fascia, Kutz. 



At 5 and 6, on rocks and stones in pools at about 

 half-tide level. Annual, March to November. 

 Trichosporangia in spring and sunniier. 



130. Phyllitis ccespitosa, Kutz. 



Common on rocks and stones in pools at about half- 

 tide level. Annual, March to November. Tricho- 

 sporangia in spring and siuamer. Tlie form debilis 

 is associated with tliis. 



