.150 D. G. Eaton — Algce from Eastport, Maine. 



ments not evident ; endochrome dense, at first in barrel-shaped 

 masses rather longer than thick, at last separating into somewhat 

 lens-shaped disks. 



56. Oscillatoria, ? 



Forms a dark blue or purple slimy coating on piles and logs, only 

 in shaded places, Prof. Verrill. Filaments bluish-green, .0001 to 

 .00013 inch in diameter. Probably a common European species, but 

 I have no means of comparing it Avith authentic specimens. 



The above list is as complete as the collections made will permit. 

 It will be remembered that Algje were sought, for only a few weeks 

 in August and September : — if this coast could be thoroughly ex- 

 plored at different seasons the list would doubtless be much extended. 



New Haven, Mart-h 19th, 187:!. 



