No. XIV. BOTANY. 32,'} 



ALG& AND DIATOMACE.K. 

 Br G. Dickie, M.A., M.D., F.L.S. 



During the Arctic Expedition of 1875-76 but few species of 

 the higher orders of marine algse were collected beyond 78° 

 N. lat. ; the following are all that have come under my 

 notice among the collections made by Captain Feilden and 

 Mr. Hart :— 



Desmcirestia aculeata, Lamour. 

 Laminaria longicruris, De la Pyl. 



„ caperata, „ 



Dictyosiphon foeniculaceus, Grev. 

 Chordaria flagelliformis, Ag. 1 

 Ectocarpus silicidosus, Lyngb. 

 Chcetopteris plumosa, „ 



These all belong to the olive- coloured series, and, with 

 the exception of the two species of Laminaria, are well known 

 European forms. 



Dr. Moss and Captain Feilden sent to me fragments of 

 stems of Laminaria from the mud of a raised beach or ' shell 

 flat ' 200 feet above the present level of the sea at Floeberg 

 Beach, N. lat. 82° 27', W. long. 61° 22', also from mud-beds 

 in Cane Valley, (xrinnell Land, N. lat. 82° 33'. The frag- 

 ments seem to belong to both species of Laminaria above 

 mentioned, and Captain Feilden states that they retained 

 the peculiar marine smell as strongly as in recent specimens. 

 The beds from which the specimens were taken are exposed, 

 by the action of a stream, to a depth of not less than thirty 

 feet in thickness : along with them were found shells of 

 My a truncata, Astarte borealis, &c. 



I could not find any trace of marine algae belonging to 

 the red series. 



1 The specimens very dwarf and fragmentary, nevertheless I think they 

 must be referred to this species. 



y 2 



