Microscopic Life in the Ocean at the South Pole. 561 



62. Spongolithis collaris. 



69. 



Spongolithis 



radiata. 



63. 



Fustis. 



70. 



... 



trachelotyla. 



64. 



Heteroconus. 



71. 



... 



Trachystauron. 



65. 



inflexa. 



72. 



... 



Trianchora. 



66. 



Leptostauron. 



73. 



... 



vaginata. 



67. 



mesogongyla. 



74. 



... 



verticillata. 



68. 



neptunia. 



75. 



... 



uncinata. 



C. CALCAREOUS POLYTHALAMIA. 



76. Grammostomum divergens, 78. Rotalia Erebi. 



77. Rotalia antarctica. 79. Spiroloculina — ? 



In several forms of the genus Cossinodiscus their green ovaries 

 were recognizable, consequently they must have been alive. 

 2. Residue from melted ice, while the ship sailed through a broad 

 tract of brown pancake ice, in 74° to 78° south latitude. (Ma- 

 terials from 75° S. lat„ 170° W. long.) 



A. SILICEOUS POLYGASTRICA. 



1. ASTEROMPHALUS BucJlU. 



8. 



Dictyocha aculeata. 



2. 



Rossii. 



9. 



Eunotia gibberula. 



3. Coscinodiscus 



lineatus. 



10. 



Fragilaria acuta. 



4. 



Lunce. 



11. 



pinnulata. 



5. 



Oculus Iridis. 



12. 



rotundata. 



6. 



radiolatus. 



13. 



Hemiaulus antarcticus 



7. 



subtilis. 



14. 



Hemizoster tubulosus. 



B. SILICEOUS PHYTOLITHARIA. 



15. Spongolithis Fustis? Fragm. 



These and the former specimens were sent over in bottles of water. 

 They were the same sealed bottles in which they were collected in 

 the year 1842. In the first little bottle, in which the sediment was 

 considerable, almost every atom being a distinct siliceous organism, 

 Hemiaulus antarcticus predominated. The larger bottle of the se- 

 cond mass had allowed the greater part to leak through the sealed 

 cork, so that only about a quarter remained. The mass of sediment 

 arrived in Berlin in May 1 844, almost all in such a condition, that 

 the author had no hesitation in considering them still alive, although 

 they all belonged to the almost or perfectly motionless forms. The 

 Fragilarias predominated F, (pinnulata) ,• these, though rarely adher- 



