189 



Ulva Lactuca L. (Farlow 1881, p. 43 as Ulva Lactuca var. 

 Lactuca). Buoy off Lake Montauk; Lake r^lontauk ; Fkinders Ba}' ; 

 Hammels Station on Jamaica Bay. 



Ulva Lactuca var. lafissima (L.) DeCandolle. Gardiners Point 

 Islet outside Gardiners Bay ; center of Gardiners Bay ; Noyack 

 Bay ; Mattituck on Great Peconic Bay ; Tuthill Point on Moriches 

 Bay ; Bellport, West Sayville and Bayshore on Great South Bay ; 

 Far Rockaway ; Hammels Station on Jamaica Bay. The plants 

 from Far Rockaway appeared, as mounted, to be so very thin and 

 so closely attached to the mounting paper that they seemed to be 

 Monostromas. Examination of cross-sections immediately showed 

 that this assumption was incorrect, for they had the usual two 

 layers of Ulva. However, the thickness in the middle of the fronds, 

 which were 1-2 dm. broad, ranged as low as 20/x, though in other 

 specimens 28-43/z, with the cells relatively broad in section as is 

 characteristic of the variety. 



Cladoplwraccae 



Spongomorpha arcta (Dillwyn) Kiitzing. (Farlow 1881, p. 50 

 as Cladophora arcta). Glen Cove. 



Bryopsidaceae 

 Bryopsis pluinosa (Hudson) C. Agardh. Glen Cove. 



Phaeophyceae 

 Ectocarpaceae 



Pylaiella litoralis (L.) Kjellman. (Farlow 1881, p. 73 as Ecto- 

 carpus littoralis). Glen Cove. 



Ectocarpus siliciilosus (Dillwyn) Lyngbye. (Farlow 1881, p. 71 

 as E. conjervoides var. siliciilosus). Noyack Bay; Greenport oppo- 

 site Shelter Island ; Hog Neck Bay ; Hammels Station on Jamaica 

 Bay. 



Ectocarpus granulosus (J. E. Smith) C. Agardh. Far Rock- 

 away ; Hammels Station on Jamaica Bay. 



Chordariaceae 



Aegira Zosterae (Lyngbye) Fries. (Farlow 1881, p. 86 as Cas- 

 tagnea Zosterae). North Great Peconic Bay. 



