BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



813 



CLASS RHODOPHYCE^. 



Order BANGIALES. 



Family BANGIACE^. 



Bangiafusco-purpurea (Dilhvyn) Lyngbye. 



Common, attached to stones and woodwork of 

 wharves between tide marks. 



Woods Hole: Harbor walls and wharves, Grassy 

 ledge on rocks along ship channel, Little Har- 

 bor on Government wharves, Juniper Point. 



Spring, summer. 



Farlow, 1873, p. 292, Woods Hole; P. B.-A., fas. 

 n, no. 87, Juniper Point (Butlers Point), Woods 

 Hole, July, 1893 (W. A. Setchell). 



Erythrotrichia ceramicola (Lyngbye) Areschoug. 

 Common, on Zostera in company with Chantran- 

 sia -virgatula, occasional on Dcsmarestia viridis. 

 Woods Hole: Grassy Ledge, Eel Pond, Little 



Harbor. Robinsons Hole (I. F. Lewis). 

 Spring, summer. 



Erylhrotrichia ceramicola Continued. 



Farlow, 1876, p. 707, Buzzards Bay; Collins, 

 1908, p. 134; Robinsons Hole, August, 1907. 



Porphyra laciniata (Lightfoot) Agardh. 



Common, attached to stones and woodwork of 



wharves near low- water mark. 

 Woods Hole: Entrance to Eel Pond, Bureau of 



Fisheries wharves, harbor walls, Grassy Ledge. 

 At all seasons. 

 Farlow, 1873, p. 292 (Porphyra vulgaris Agardh), 



Woods Hole. 



Oak 



Porphyra leucosticta Thuret. 



Common, on Zostera and larger algae. 

 Woods Hole: Great Harbor, Little Harbor. 



Bluffs (Cottage City, King). 

 Spring. 

 Collins, 1884, pp. 131, 132, Oak Bluffs (Cottage 



City, J. D. King). 



Order NEMALIONALES. 



Family NEMAUOXACE^E. 



Acrochaetium Dasycs Collins. 



Occasional, on Dasya elcgans. 



Woods Hole (Collins). 



September 2, 1905 (Collins). 



Collins, I9o6c, p. 191, Woods Hole, September 

 2, 1905, on Dasya elegans. P. B.-A., fas. xxvn, 

 no. 1342, Woods Hole, September 2, 1905 (F. S. 

 Collins). 

 Acrocruelium Daviesii (Dillwyn) Nageli. 



Occasional, on Desmarestia liridis. 



Robinsons Hole (I. F. Lewis). 



August, 1907. 



Collins, 1908, p. 134, Robinsons Hole, August, 

 1907. 



Synonym, Chantransia Daviesii (Dillwyn) Thu- 

 ret, P. B.-A., fas. xvm, no. 880. 



Acroch&tium minimum Collins. 



Occasional, on Desmarestia viridis. 



Robinsons Hole (I. F. Lewis). 



August, 1907. 



Collins, 1908, p. 133, Robinsons Hole, August, 



1907. 

 Acrochatium secundatum (Lyngbye) Nageli. 



Common, attached to Zostera, Ceramium rubrum, 

 Porphyra laciniata, etc. 



Woods Hole: Grassy Ledge, Juniper Point. 



Summer, winter, probably at all seasons. 



Synonym, Chantransia secundata (Lyngbye) Thu- 

 ret, P. B.-A., fas. xxn, no. 1088, not no. 236. 



Acrochcetium -virgatulum (Harvey) Bornet 



Abundant, fringing Zostera, and occasionally on 



Ceramium rubrum. 

 Woods Hole: Eel Pond, Grassy Ledge, Little 



Harbor. 



Summer, probably at other seasons. 

 Synonym, Trentepohlia virgatula var. secundata 



(Farlow, 1881, p. 109). 



Chantransia efflorescens var. Thuretii Bornet. 



Occasional, attached to Ceramium rubrum and 

 Cystoclonium purpurascens. 



Woods Hole : Off Juniper Point at a depth of from 

 i to 3 meters (Nott). Gay Head (Farlow). 



Summer, July, 1895 (Nott). 



Farlow, 1876, p. 705 (Chantransia Daviesii Thu- 

 ret), Gay Head; Farlow, 1881, p. 109 (Trente- 

 pohlia Da-viesii, Harvey), Gay Head, on Cysto- 

 clonium purpurascens; Collins, 18963, p. 5 

 (Chantransia corymbifera Thuret), Woods Hole, 

 on Ceramium rubrum and Cystoclonium pur- 

 purascens (C. P. Nott); P. B.-A., fas. iv, no. 

 192 (Chantransia corymbifera Thuret), Woods 

 Hole, July 15 to 20, 1895 (C. P. Nott). 



Nemalion multifidum (Weber & Mohr) J. Agardh. 

 Common, attached to rocks between tide marks. 

 Woods Hole: Juniper Point, Grassy Ledge. 



Cuttyhunk. Penikese. Gay Head. Black 



Rock. 

 Summer, probably at other seasons. 



