134 
28. Celetomorpha Melagonium , Kiitz. Ner. Bor. Amer. 3, p. 85. 
Hab. Boots of large Algee, Whalefish Islands, Dr. Lyall. 
29. CniETOMORPHA Piquotiana, Mont. Ner. Bor. Amer. 3, p. 85. 
Hab. Floating in the sea, near Whalefish Islands, Davis’s Straits, Dr. Lyall. (A 
single filament only !) 
30. Hormotrichum Carmichaelii , Harv. Ner. Bor. Amer. 3, p. 90. 
Hab. Wellington Channell, Dr. Lyall. 
31. Hormotrichum boreale, Harv. Ner. Bor. Amer. 3, p. 90. 
Hab. Whalefish Islands, Dr. Lyall. 
32. Hormotrichum Wormslcioldii , Kiitz. Ner. Bor. Amer. 3 ,p. 91. 
Hab. Dredged in 6 fathoms, in Queen’s Channel, 76° 29' N., 96° 13' W., Dr. Lyall. 
Coast of Greenland, Lyngbye. 
33. Mougeotia ( species innominata.) 
Hab. In fresh water. Isle of Disco, Dr. Lyall. 
34. Lyngbya muralis , var. aquatica. Ner. Bor. Amer. 3, p. 104. 
Hab. In pools of fresh water, Whalefish Islands, Dr. Lyall. 
35. Ulva latissima , L. Ner. Bor. Amer. 3, p. 59. 
Hab. Isle of Disco, and dredged in Queen’s Channel, Dr. Lyall. 
36. Ulva bullosa , L. Ner. Bor. Amer. 3. p. 60. 
Hab. In pools of fresh water, Whalefish Islands, Dr. Lyall. 
37. Enteromorpha intestinalis , Link. Ner. Bor. Amer. 3 p. 57. 
Hab. Whalefish Island, Dr. Lyall. (Probably universally spread . ) 
38. Oscillatoria corium, Ag. Harv. Man. Ed. 1 p. 166. 
Hab. On stones in a running stream. Wellington Channel, Dr. Lyall. 
39. Nostoc arcticum , Berk. Ner. Bor. Amer. 3, p. 113. 
Hab. Assistance Bay, lat. 75° 40' N., Dr. Sutherland. 
40. Nostoc verrucosum , Yauch. Ner. Bor. Amer. 3, p. 114. 
Hab. Pools of fresh water, Isle of Disco, and at Beechey Islands, Dr. Lyall. 
41. Nostoc Sutherland i, Dickie. Ner. Bor. Amer. 3, p. 114. 
Hab. Winter quarters, Baffin’s Bay, Dr. Sutherland. 
42. Nostoc microscopicum , Carm. Ner. Bor. Amer. 3, p. 115. 
Hab. Baffin’s Bay, Dr. Sutherland. 
