26 1853 bands of twenty or thirty feet in breadth, in which they were thickly crowded, while in the interspaces they were sparingly distributed. These bands were a few hundred feet apart, and accorded in direction with the wind. They were brightly luminous from the contained animals, and presented a beautiful appearance, as a diagram, seen from the tops. But the wake of the ship was the most remarkable spec- tacle; presenting, from the stern to a point a long way astern, a milky way of yellow light, containing bright stars which increased in number or strained out as the ship approached or receded from the bands of Tyros ones. The darting of these animals, or the quick jerks in which their mo- tion consist, being often simultaneous in small groups, gave a singular appearance; something a flight of small rockets: - this also at first carused us to think that schools of fish were following the vessel. Other animals seen were much-tu- dudes of Nyctea urcinata, a few 1853 27 of H. longirostra, several Cladocera, and a large number of crustaceans among which the curious genus Phyl- losoma occurred. A number of the curious water skippers previously taken on July 24th, also occurred. Monday, (Aug. 8th) S.Lat. 3° 43' W.Long. 22° 51' Tuesday, Aug. 9. S.Lat. 2° 35' W.Long. 24° 28' This evening the tow-net took a living Ar- gonata, with its shell, containing eggs. Wednesday Aug 10 S.Lat. 0° 36' W.Long. 25° 41' Between seven and eight o'clock this evening we crossed the line, in 26° W. Thursday, Aug. 11. S.Lat. 1° 10' W.Long. 26° 5½' In the evening the tow-net took a sin- gle specimen of Nyctea trispinosa Friday, Aug 12. S.Lat. 3° 1½' W.Long. 28° 08' The wind has continued strong for the last week, but enables us only to head S.W. Saturday, Aug. 13. S.Lat. 5° 08' W.Long. 29° 24'