79 8 



BULLETIN OF THE BUREAU OF FISHERIES. 



SUBFAMILY LYNGBYE^. 



Lyngbya cestuarii (Mertens) Liebman. 



Common, salt marshes and brackish pools, on 



stones and mud between tide marks, also on 



wharves. 

 Woods Hole: Penzance, Eel Pond. Salt marshes 



of Quisset and Hadley Harbor, 

 Summer, undoubtedly throughout the year. 



Lyngbya confervoides Agardh. 



Occasional, in salt marshes and pools. 



Woods Hole: Penzance. 



Summer. 



Farlow, 1881, p. 35 (Lyngbya luteo-fusca J. 

 Agardh), Woods Hole; A. A. B. Ex., fas. i, 

 no. 48 (Lyngbya luteo-fusca J. Agardh), Woods 

 Hole (W. G. Farlow). 



Lyngbya Lagerheimii (Mobius) Gomont. 

 In brackish waters. 

 Little Pond of Falmouth Heights. 

 Known only from specimen in herbarium of the 



Marine Biological Laboratory collected by W. 



A. Setchell and W. J. V. Osterhout. 



Lyngbya majuscula (Dillwyn) Harvey. 



Occasional, attached to Zostera, and sometimes 



found floating in large quantities in sheltered 



situations. 

 Woods Hole: Great Harbor. Vineyard Haven. 



Vineyard Sound east end of Naushon. Me- 



nemsha Bight. 

 Summer. 

 Farlow, 1873, p. 293, Woods Hole, Naushon, 



Edgartown; Farlow, 1875, P- 3^0. Woods Hole; 



A. A. B. Ex., fas. v, no. 228, Vineyard Haven, 



September, 1883 (W. G. Farlow); P. B.-A., 



fas. v, no. 202, Woods Hole, August 16, 1894 



(W. A. Setchell). 



Lyngbya semiplena (Agardh) J. Agardh. 



Common, in salt marshes, brackish pools and 

 ditches, mixed with Microcoleus, Lyngbya, etc. 

 Woods Hole: Ditches of Penzance. 

 Summer, undoubtedly at other seasons. 



Oscillatoria amphibia Agardh. 



Common, on woodwork of wharves, frequently 



mixed with Oscillatoria Icetemrens. 

 Woods Hole. 



Summer, undoubtedly at other seasons. 

 Found by F. S. Collins, summer of 1904. 



Oscillatoria l&tevirens Crouan. 



Common, on woodwork of wharves, frequently 



mixed with Oscillatoria amphibia. 

 Woods Hole. 



Summer, undoubtedly at other seasons. 

 Found by F. S. Collins, summer of 1904. 



Phormidium persicinum (Reinke) Gomont. 



Rare, appearing during the winter in a jar of salt 



water (G. M. Gray). 

 Woods Hole. 

 P. B.-A., fas. xxix, no. 1401, Woods Hole, 



May, 1907 (B. M. Davis). 



Spirulina subsalsa Oersted. 



Common in salt marshes and brackish pools, 

 mixed with Lyngbya, Microcoleus, etc. 



Woods Hole: Penzance. Quisset. Hadley 

 Harbor. 



Summer, probably at all seasons. 



Farlow, 1881, p. 31 (Spirulina tenuissima Kxitz- 

 ing), Woods Hole. 



SUBORDER HETEROCYSTE.E. 



Family NOSTOCACE/E. 



Anabccna torulosa Lagerheim. 



Abundant, on decaying algae and Zostera, from 

 whence it frequently rises and floats in quiet 

 waters. 



Woods Hole: Zostera patches in Eel Pond, Little 

 Harbor, Ram Island. Similar situations Quis- 

 set Harbor, Hadley Harbor, Tarpaulin Cove. 



Summer. 



Farlow, 1876, p. 715 (Sphacrozyga Carmichaelli 

 Harvey), Woods Hole; Farlow, 1881, p. 30 

 (Sphcerozyga Carmichaelli Harvey), Woods 

 Hole. 



Microchate grisea Thuret. 



Common, on pebbles and shells with Isactis. 

 Woods Hole: Eel Pond. West Falmouth (Col- 

 lins). 



Summer, undoubtedly at other seasons. 



Collins, 1884, p. 130, old pecten shell, West Fal- 

 mouth. 



Nodularia Har-veyana (Thwaites) Thuret. 



Common, in brackish water mixed with Lyngbya, 



Microcoleus, etc. 

 Woods Hole: Eel Pond. 

 Summer. 



