. 
BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 
Antithamnion cruciatum, 56, few. 
Antithamnion plumula, 57 and 58, few. 
Callithamnion roseum, 57, few. 
Ceramium rubrum, 57 and 7731, many; 59 and 7731 
(1907), few. 
Chondrus crispus, 56, 57,and 58, many; 59, 60, 7581 
(1907), and 7731 (1907), few. 
Corallina officinalis, 56 and 57, many; 58, 60, and 
7581, few. 
Cystoclonium purpurascens, 56, 57, 58, and 509, 
many; 60, few. 
Cystoclonium purpurascens var. cirrhosum, 56, 58, 
59, and 7731 (1907), many; 60, 7581 (1907), and 
7731, few. 
Delesseria sinuosa, 56, 57, and 58, many; 7731, few. 
Grinnellia americana, 56, many; 7581, few. 
Gymnogongrus norvegicus, 56, few. 
Hildenbrandia prototypus, 58 and 59, many. 
Lithothamnion polymorphum, 57, 58, 59, and 60, 
many. 
Lomentaria rosea, 57 and 58, many; 56 and 59, few. 
489 
Melobesia farinosa, 57 and 58, many. 
Melobesia membranacea, 56, 57, and 58, many. 
Melobesia pustulata, 57, few. 
Phyllophora Brodizi, 56, 57,and 58, many; 59, few. 
Phyllophora membranifolia, 56, 57, and 58, many; 
60, few. 
Plumaria elegans, 57, 58, and 59, many. 
Polyides rotundus, 56, 57, 58, 60, and 7581 (1907), 
few. 
Polysiphonia atrorubescens, 56, many. 
Polysiphonia elongata, 56, 59, and 7731, many; 60, 
7581 (1907), and 7731 (1907), few. 
Polysiphonia nigrescens, 60 and 7731, many; 59, 
7581 (1907), and 7731 (1907), few. 
Rhodomela subfusca, 56, few. 
Rhodomela Rochei, 7731 (1907), few. 
Rhodymenia palmata, 59, many; 60and 7731 (1907), 
few. 
Scinaia furcellata, 57, few. 
Spermothamnion Turneri, 56, 57, and 58, many; 
59, few. 
(2) THE REEFS OF SOW AND PIGS. 
The bottom around the reefs of Sow and Pigs (stations 35, 36 and 37), lying off Cut- 
tyhunk, has an algal flora noteworthy for the presence of such species as Delesseria sinuosa, 
Lomentaria rosea,and Plumaria elegans, forms which are also characteristic of the ledges off 
Gay Head and are members of the cool-water sublittoral formation. The quantity of 
algze is, however, not great. An examination of the reefs themselves, although difficult, 
would doubtless prove interesting. There were considerable amounts of Corallina 
officinalis (35, 36, 37), Delesseria sinuosa (35, 36), Phyllophora Brodiai (35, 36, 37), and 
Plumaria elegans (36, 37), and in addition relatively few plants of Chetomorpha melago- 
mum (37), Ectocar pus fasciculatus (37), Laminaria A gardhii var. vittata (36, 37), Ahnfeldtia 
plicata (36), Ceramium rubrum (37), Ceramiwm tenuissimum (35), Chondrus crispus (35, 
36), Cystoclonium purpurascens var. cirrhosum (35, 36, 37), Lithothamnion polymorphum 
(35), Lomentaria rosea (37), Melobesia pustulata (36), Rhodymenia palmata (36), and 
Spermothamnion Turneri (35). 
(3) THE PASSAGE OF WOODS HOLE. 
The easterly side of the passage of Woods Hole (station 122) off the end of the hook- 
shaped point of land called Penzance (Long Neck) has a sand and gravel bottom in 4 to 5 
fathoms. The following species were found in small quantities: Champia parvula, Dasya 
elegans, Griffithsia Bornetiana, Grinnellia americana, Phyllophora Brodiei, Polysiphonia 
nigrescens, Rhodomela Rochet, and Seirospora Griffithsiana. 
The westerly side of the passage off Uncatena Island (station 118) on a bottom of 
sand and shells showed small quantities of Chordaria flagelliformis, Ceramium rubrum, 
Chondrus crispus, Cystoclonium purpurascens, and Lomentaria uncinata. Off the entrance 
to Hadley Harbor (stations 119 and 120) the bottom is sand and mud, and appears 
to support no algal life. 
