BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 
Ceramium tenuissimum, 7542bis, many; 753obis, 
7541bis, 7554bis, 7559, and 756sbis, few. 
Champia parvula, 7549bis, 7732, 7733, 7745) 7749) 
7752, and 7754, many; 7521, 7521 (1907), 7523bis, 
7525, 7525bis, 7526 (1907), 7533bis, 7534, 7541) 
7541bis, 7542, 7542 (1907), 7543 (1907), 7547, 7549 
(1907), 7551, 755% (1907), 7553, 7554, 7554bis, 
7557» 7559» 7560, 7562, 7565bis, 7739, 7741, 7746; 
and 7753, few. 
Chondrus crispus, 7521 (1907), 7533bis, and 7740, 
many; 7523bis, 7524bis, 7525bis, 7536, 7542bis, 
7554; 7554bis, 7560, 7561, 7562, 7732, 7739, and 
7740, few. 
Corallina officinalis, 7531bis, many. 
Cystoclonium purpurascens, 7524bis, 
7542 (1907), and 7549 (1907), few. 
Cystoclonium purpurascens var. cirrhosum, 39, 
* 7523) 7534, and 7740, few. 
Dasya elegans, 7733, 7751, and 7753, few. 
Delesseria sinuosa, 39, few. 
Gracilaria multipartita, 7554bis, few. 
Griffithsia Bornetiana, 7533bis, 7749, and 7754, few. 
Grinnellia americana, 7542 and 7733, many; 7521, 
7521 (1907), 7525bis, 7527, 7531bis, 7536, 7537, 
7549, 7541, 7546, 7547) 7549) 7551, 7553, 7554, 
7550bis, 7557, 7559, 7560, 7562, 7565bis, 7732, 
7737, 7741, and 7753, few. 
Hildenbrandia prototypus, 7544bis and 7547bis, 
many; 7533bis, 7546bis, and 7747, few. 
Lithothamnion polymorphum, 7524bis, 7525bis, 
7533bis, 7534bis, and 7544bis, many; 7534,7535bis, 
7539, 7539bis, and 7752, few. 
7525bis, 
485 
| Lomentaria uncinata, 7537, 7548, 7551, 7557, 7733» 
and 7751, few. 
Melobesia Lejolisii, 7525bis, many. 
Melobesia membranacea, 7739, few. 
Phyllophora Brodizi, 7521bis, 7523, 7524, 7525bis, 
7526(1907), and 7533bis, many; 7522bis, 7524bis, 
7525» 7539 7532) 7534) 7535» 7539 7530bis, 7537, 
7541, 7542 (1907), 7739, 7744, and 7749, few. 
Phyllophora Brodizi var. catenata, 7521 (1907), 
many. 
Phyllophora membranifolia, 7521bis, 7525bis, 
7531bis, 7533bis, 7739, 7740 7742, 7744, and 7749, 
many; 7523bis, 7524bis, 7530 (1907), 7542bis, 
es (1907), 7549 (1907),7741, 7743, 7745,and 7754, 
ew. 
Polyides rotundus, 7752, many; 7526 (1907),7532bis, 
7533bis, 7536, 7541bis, 7560, 7749, and 7751, few. 
Polysiphonia elongata, 7557, 7733 7739) 7751) 7752» 
and 7754, few. 
Polysiphonia nigrescens, 7752, many; 7523bis, 7549 
(1907), 7551, and 7551 (1907), few. 
Polysiphonia violacea, 7523bis, few. 
Rhodomela subfusca, 7554bis, few. 
Rhodymenia palmata, 753obis, few. 
Spermothamnion Turneri, 7525bis, 7533bis, and 
7749, many; 752tbis, 7524, 7526 (1907), 7530bis, 
7537) 7542, 7548, 7551, 7553, 7560, 7562, 7739, 
7741, 7751, 7752, and 7754, few. 
Spyridia filamentosa, 7530bis, 7533bis, 7542, 7559, 
7562, 7741, and 7749, few. 
The narrow portion of Vineyard Sound as well as the westerly portion presents 
some large areas practically devoid of vegetation for the reason that the bottom is 
sandy. The chief of these regions are around stations (7556, 7562, 7563, 7564, 7565, 
7697)» (75471 7549, 7559 7551, 7552, 7553)» (7536, 7539 7543 7544» 7545 7736, 7737), 
(7530, 7531)» (7521, 7522) 7527; 7528, 7529, 7532) 7533): 
The more varied character of the bottom in the deeper waters of the narrow portion 
of the Sound gives a larger representation of alge, both in abundance and in number of 
species, than the westerly portion. Certain species appear which were not noted or were 
uncommon in the deeper waters of the westerly portion: Chordaria flagelliformis, 
Mesogloia divaricata, Sargassum Filipendula, Raljsia clavata, Callithamnion Baileyt, 
Ceramium fastigiatum, Ceramium strictum, Gracilaria multipartita, Griffithsia Bornetiana, 
Hildenbrandia prototypus, Lithothamnion polymorphum, Melobesta membranacea, and 
Rhodomela subjusca. 
Other species characteristic of more open waters are not present in this part of the 
Sound or are very rare; conspicuous among these are Chetomorpha melagonium, Lami- 
naria Agardhw var. vittata, Laminaria digitata, Delesseria sinuosa, Lomentaria rosea, 
Plumaria elegans, and Rhodymenia palmata. Considering the list as a whole, the most 
striking features are the abundance and widespread distribution of Sargassum Filipen- 
dula, Agardhiella tenera, Ceramium rubrum, Champia parvula, Chondrus crispus, Grin- 
