172 THREE CRUISES OF THE “ BLAKE.” 
and when the sea is calm and the circumstances are favorable, 
these animals are individualized by the greenish, golden, or sil- 
nam 
naetis, Embryo of 
Edwardsia. 10. 4 
Fig. 64 а. — Strongylocentro- 
tus Pluteus. Greatly mag- 
nified. 
7, 
| 4 
Fig. 64. — Asteracanthion Pluteus. 
Greatly magnified. 
Fig. 65. — Cyphonautes, Embryo of 
Bryozoön. Greatly magnified. 
Fig. 67. — Embryo of Loligo. 20, 
very light which betrays their presence, and defines their out- 
lines, while it illuminates the sea itself. On tempestuous nights, 
the phosphorescence, intensified by the motion of the water, adds 
