- Coscinodiscus lineatus.
- lunæ.
- subtilis.
- Dictyocha aculeata.
- speculum.
- Fragilaria acuta.
- granulata.
- rotundata.
- Halionyx duodenarias.
- Pyxidicula.
This contains so very much larger a proportion of Dictyochas than are found in other samples, that they must have been selected by the Salpa, with whom therefore they are apparently a favourite kind of food.
6. Floating spots from the surface of the open sea, 64° S. latitude, 160° W. longitude.
Small loose-textured, tender-threaded masses (similar to the Oscillatorias of our waters) interspersed with small grains. They consist principally of the siliceous, very tender and long side tubes of the quite new and very peculiar genus Chætoceros. The nature of the grains is still obscure. The other forms are interspersed in the loose mass; they all still show their dried ovaries, evidencing that they were collected alive.
Siliceous-shelled Polygastrica.
- Asteromphalus Darwinii.
- Hookerii.
- Rossii.
- Buchii.
- Humboldtii.
- Chætoceros dichaeta.
- tetrachaeta.
- Coscinodiscus lineatus.
- subtilis.
- Dictyocha aculeata.
- Binoculus.
- Dictyocha ornamentum.
- speculum.
- Fragilaria Amphiceros.
- granulata.
- Hemiaulus obtusus.
- Lithobotrys denticulata.
7. Taken up by the lead from 207 fathoms depth, in the Gulf of Erebus and Terror, 63° 40′ S. latitude, 55° W. longitude, among apparently inorganic sand, were found with sometimes distinctly recognisable ovaries:—
A. Siliceous-shelled Polygastrica.
- Anaulus scalaris.
- Biddulphia ursina.
- Coscinodiscus Apollinis.
- cingulatus.
- lunæ.
- Coscinodiscus subtilis.
- velatus.
- Fragilaria rotundata.
- Gallionella sol.
- tympanum.
