The following is a report on the polychaetous annelids collected by the Carnegie on cruise VII in 1928-1929, and submitted to the writer for study through the courtesy of Dr. J. A. Fleming, Director of the Department of Terrestrial Magnetism of the Carnegie Institution of Washington. As indicated on the accompanying map (p. iv) and on the list giving the geographical positions of the collecting stations (pp. 44-51), the cruise covered extensive areas in the North Atlantic and Pacific oceans. With only a few exceptions three hauls were made at each station at depths of (surface), 50 m, and 100 m. With the description of each species the author has given the depth or depths at which it was collected, arranging these data in tabular form for convenience of reference in the case of the more abundant species. The location of each station is designated on maps 1 to 4 (pp. 56-59) by black circles. The station numbers are indicated by vertical figures for every fifth station in multiples of five, except where clarity requires numbering at more frequent intervals. The slant figures designate the species according to the legends on the maps.
In view of the imperfect knowledge of the annelid fauna of the oceans, it is to be specially noted that of the twenty-eight species (not larvae or fragments) dealt with or collected, fifteen are new, and two of the remaining thirteen are not forms of the open ocean, as in the case of Eurythoe complanata
Pallas collected on Luminao Reef, Guam, Mariana Islands.
[None. Introduction as follows:]