796 
BULLETIN OF THE BUREAU OF FISHERIES. 
refer to stations, selected from those of the corresponding number in Vineyard Sound, 
that were redredged in the following summer (1904). A few numbers followed by the 
date (1907) refer to selected stations redredged in the summer of that year. In addition 
to the numbered stations plotted upon the maps there are records for several special 
trips of the author on the Genevieve of the Marine Biological Laboratory and the Blue 
Wing. These were (1) off Devils Bridge, Gay Head, August 17, 1903 ( Blue Wing), (2) 
Lobsterville Cove, Menemsha Bight, August 9, 1904 ( Blue Wing), (3) Menemsha Bight, 
July 17, 1905 ( Genevieve ), and (4) cove west of Cuttyhunk Neck, July 27, 1905 ( Gene- 
vieve ). For detailed information on the situation of the stations, dates of dredgings, 
depths, character of the bottom, etc., the reader is referred to the “Description of 
dredging stations occupied during the present Survey,” section 1, p. 201-218. 
The strong tidal currents of Vineyard Sound and Buzzards Bay carry large amounts 
of algal debris, which is widely distributed along the bottom, frequently in stations 
utterly foreign to the life habits of the species. The dredge very often brings up frag- 
ments of this algal drift, which can generally be recognized by their water-worn appear- 
ance and frayed ends. However, it is sometimes very difficult to be certain whether 
such fragments are algal drift or have been torn from their attachment by the dredge. 
We have endeavored to separate critically all clear evidence or probability of algal drift 
from the records of growth in situ. The former will appear at the ends of the lists of 
stations for certain species under the heading “Drifted fragments,” and these records 
must be understood to mean that the species does not, so far as we know, grow at that 
station. 
The species are arranged alphabetically in the genera, which are grouped in families 
following closely the classification presented in Engler and Prantl, “Die natiirlichen 
Pflanzenfamilien.” The assembling into orders differs in important particulars from 
the arrangement in the above treatment. Four classes are recognized, the Cyanophy- 
ceae, Chlorophyceae, Phaeophycese, and Rhodophyceae. 
The list aims to include all specific references in literature and published sets of 
algae to the occurrence of the species within the limits of the survey. In this list, 
only the author’s name and date of publication appear, the full titles of the papers being 
given in the bibliography at the end of the catalogue. P. B.-A. stands for the Phvco- 
theca Boreali- Americana of Collins, Holden, and Setchell; A. A. B. Ex. for the Algae 
Americanae Boreales Exsiccatae of Farlow, Anderson, and Eaton; A. A. D. Ex. for the 
Algae Aquae Dulcis Exsiccatae of Wittrock and Nordstedt. The authorities for the 
specific names are, with few exceptions, those given in the Phycotheca Boreali- 
Americana and in “Preliminary Lists of New England Plants: V. Marine Algae” by 
Frank S. Coffins (Rhodora, vol. 11, p. 41-52, 1900). 
We are greatly indebted to Mr. Collins for a number of determinations and for his 
kindly criticism of the manuscript. 
