112 Papers from the Marine Biological Laboratory at Tortugas. 
of College of Science, University of Tokyo, vol. 17, article 2, 37 pp., 2 
plates. 
The Pacific palolo has been treated of by numerous writers, the most 
important modern accounts being those of B. Friedlander, 1898, Biolog. 
Centralblatt, Bd. 18, pp. 337-357, 2 figs.; of Collin, 1899, in Kramer’s Bau 
der Korallenriffe, pp. 164-174, and of W. McM. Woodworth, 1903, Ameri- 
can Naturalist, vol. 37, pp. 875-881, 1 fig. and 1907, Bulletin Museum 
Comparative Zoology at Harvard College, vol. 51, pp. 1-22, 3 plates. 
Lysidice oele, the “ wawo”’ of Amboina, Malay Archipelago swarms on 
the second and third nights after the full moon of March and April. ‘It is 
described by R. Horst, 1905 (Over Wawo (Lysidice oele n. sp.) Rumphius 
Gedenkboek, Kolon. Mus. Haarlem, pp. to5—108). 
-S EXPLANATION OF THE PLATE. 
[The drawings are from life by the author.] 
Fic. 1. Mature male with posterior sexual segments still attached. They are destined 
to break away at the point a. 
Fic. 2. Female sexual segments swimming through the water, showing rolling, twist- 
ing movement of worm as it progresses backward. 
Fic. 3. Torn and shrunken sexual segments sinking to bottom to die after having 
discharged the sexual products. 
Fic. 4. Enlarged photograph of an immature male worm, 1.5 times the natural size. 
This worm was still alive when photographed. 
