BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 



485 



Ceramium tenuissimutn, 7542bis, many; 753obis, 

 7S4ibis, 7554bis, 7559, and 7565^3, few. 



Champia parvula, 7549bis, 7732, 7733, 7745, 7749, 

 7752, and 7754, many; 7521, 7521 (1907), 7523^3, 

 7525. 7525^13, 7526 (1907), 7S33bis, 7534, 7541, 

 754ibis, 7542, 7542 (1907), 7543 (1907), 7547, 7549 

 (1907). 7SSI. 75SI (i9°7). 7553. 7554. 75S4bis, 

 7557. 7559. 7560, 7562, 7565^3, 7739, 7741, 7746, 

 and 7753, few. 



Chondru3 crispus, 7521 (1907), 7533bis, and 7749, 

 many; 7523bi3, 7S24bis, 7525bis, 7536, 7542bi3, 

 7554; 7554bi3, 7560, 7561, 7562, 7732, 7739, and 

 7746, few. 



Corallina officinali3, 753ibis, many. 



Cystoclonium purpurascen3, 7524bi3, 7525bis, 

 7542 (1907), and 7549 (1907), few. 



Cystoclonium purpurascens var. cirrhosum, 39, 

 7523. 7534. and 774o, few. 



Dasya elegans, 7733, 7751, and 7753, few. 



Dele33eria sinuosa, 39, few. 



Gracilaria multipartita, 7554bis, few. 



GriiKthsia Bometiana, 7533bi3, 7749, and 7754, few. 



Grinnellia americana, 7542 and 7733, many; 7521, 

 7521 (1907), 7525bis, 7527, 753ibi3, 7536, 7537, 



7540, 7541. 7546, 7547. 7549. 7551. 7553. 7554. 



7556bis, 7557, 7559, 7560, 7562, 7565^3, 7732, 



7737. 7741. and 7753, few. 

 Hildenbrandia prototypus, 7544bis and 7547bis, 



many; 7533bi3, 7S46bis, and 7747, few. 

 Lithoth amnion polymorphum, 7524bi3, 7525bis, 



7533bis,7534bis,and7544bis,many;7534,7S35bis, 



7539. 7539bis, and 7752, few. 



Lomentaria uncinata, 7537, 7548, 7551, 7557, 7733, 



and 7751, few. 

 Melobesia Lejolisii, 7525bis, many. 

 Melobesia membranacea, 7739, few. 

 Phyllophora Brodifei, 752ibis, 7523, 7524, 7525bis, 



7526 (1907), and 7533bis, many; 7522bis, 7524bis, 



7525. 7530. 7532, 7534. 7535. 7536. 7536bi3, 7537, 



7541. 7542 (1907). 7739. 7744. and 7749, few. 

 Phyllophora Brodiai var. catenata, 7521 (1907), 



many. 

 Phyllophora membranifolia, 752 ibis, 7525^8, 



753ibis, 7S33bis, 7739, 7740, 7742, 7744, and 7749, 



many; 7523^3, 7S24bis, 7530 (1907), 7542bi3, 



7543 (i907),7549(i907).774i, 7743. 7745. and7754, 



few. 

 Polyidesrotundus,7752, many; 7526 (1907), 7532bis, 



7533bis. 7536, 754ibis, 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, 753obi3, few. 

 Spermothamnion Tiuneri, 7525bis, 7533bis, and 



7749, many; 752ibis, 7524, 7526 (1907), 753obis, 



7537. 7542, 7548, 7SSI. 7553. 7560, 7562, 7739, 



7741. 7751, 7752, and 77i;4, few. 

 Spyridia filamentosa, 753obis, 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). (7547. 7549. 7550, 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 narrovt' portion 

 of the Sound gives a larger representation of algs, 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 FilipcndiUa, Raljsia clavata, Callithamnion Baileyi, 

 Ceramium fasiigiatum, Ceramium strictum,, Gracilaria m,ulti partita, Griffithsia Bometiana, 

 Hildenbratidia prototypus, Lithothamnion polymorphum, Melobesia m,e.mbranacea, and 

 Rhodomela subfusca. 



Other species characteristic of more open waters are not present in this part of the 

 Sound or are very rare ; conspicuous among these are Chcetomorpha melagonium, Lami- 

 naria Agardhii var. vittata, Laminaria digitaia, Dclesscria 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- 



