130 
BULLETIN OF THE BUREAU OF FISHEEIES 
Ccelenterates recorded from 1893 to 1907 were: 
Hydromedusge: 
Aglantha conica, Hargitt. 
A. digitalis, Miiller. 
Bougainvillia carolinensis (Mc- 
Agassiz. 
Corymorpha pendula, Agassiz. 
Ectopleura ochracea, Agassiz. 
Epenthesis folleata, McCrady. 
Eutima mira, McCrady. 
Hybocodon prolifer, Agassiz. 
Liriope scutigera, McCrady. 
Lizzia grata, Agassiz. 
Nemopsis bachei, Agassiz. 
Obelia sp. 
Oceania languida, Agassiz. 
Podocoryne fulgurans (Agassiz). 
Rhegmatodes tenuis, Agassiz. 
Crady). 
B. superciliaris, Agassiz. 
Clytia (probably C. bicophora) 
Hydromedusse — Continued. 
Staurostoma laciniata (Agassiz). 
Stomotoca apicata (McCrady). 
Synocoryne mirabilis, Agassiz. 
Tiaropsis diademata, Agassiz. 
Tima formosa, Agassiz. 
Turritopsis nutricula, McCrady. 
Zygodactyla groenlandica (Peron and 
Lesueur) . 
Scyphomedusse : 
Aurelia flavidula, Peron and Lesueur. 
Cyanea capillata, Eschscholtz 
Dactylometra quinquecirra (Desor). 
Ctenophora : 
Beroe cucumis, Fabricius 
Bolina alata, Agassiz. 
Mnemiopsis leidyi, Agassiz. 
Pleurobrachia pileus (Fabricius). 
ANNULATA AND VERMES 
The free-swimming annelids may be grouped under three headings — true 
pelagic adults, benthonic adults swirmning during their breeding season, and the 
early larval stages of all marine Polychseta. A fourth group may be added in this 
case to include the bottom forms carried by strong currents during storms. 
Of the true pelagic annelids only one species occurs frequently in the waters 
of Buzzards Bay and Vineyard Sound, although Moore (1903) has described two 
other types from this region. Tomopteros Jielgolandica is taken from December to 
April at Woods Hole. During seasons when southerly winds are prevalent they 
have been taken in considerable abundance. The greatest number recorded was in 
1906, when many specimens were taken almost daily throughout April imtil May 2. 
During the spring of 1923 there were almost no winds from the south, and as a 
result oceanic forms have been rare. One specimen of Tomopteros appeared on 
February 5, that being the only specimen taken during the year. 
Benthonic annelids often appear at the surface in great numbers, particularly 
in the evening, during their breeding season. In the groups where the sexual 
products are discharged directly into the water the active period is comparatively 
short, sometimes lasting less than a week. This occurs in the various species of the 
family Nereida3. The adidts swarm at certain definite places, usually along sandy 
beaches or protected harbors, and literally fill the water with cloudy masses of 
eggs and sperm. 
From July 20 to 24, 1922, Nereis limbata swarmed in immense nimibers at the 
surface in the eel pond. A few were noticed at other spots along the shore, but 
none appeared in the daily surface collections. On April 1, 1923, the beach at 
Nobska Point was the scene of a swarming of N. virens. On^many occasions during 
the first two weeks of April ripe males were seen swimirjing among the Fucus about 
