62 0. B. B0GGILD. BOTTOM DEPOSITS. APPENDIX II. 



locality, the Sogne Fjord, where it was found at a depth of 1036 metres. 

 The species occurs in the post-tertiary deposits of Norway. 



Uvigerina pygmaea and Biloculina simplex have similar distribution. 



Operculina ammonoides is not found north of Norway. 



Not a specimen nor a fragment of these three Thalamophora were 

 found in the Norwegian North Atlantic Ocean. 



If this Ocean was shallow in Quarternary times, we should now expect 

 Rhabdammina abyssorum and the three other species to be common there. 



On the other hand Thalamophora occurs in mud taken from the ice 

 by Nansen's North Polar Expedition and also in mud from the ice in the 

 Denmark Strait, collected by Nansen in 1882. 



In the mud from the surface of the ice from Denmark Strait, kindly 

 sent me for examination by Prof. Nansen, very few Thalamophora were 

 to be seen, in fact only three specimens of Trochammina inflata. The 

 other sample of mud from the ice contained proportionally 1 many more 

 Thalamophora-organisms and altogether it seems probable that an examina- 

 tion of mud from different parts of the drifting ice would show the presence 

 of a great many Thalamophora. 



1 Of the mud from the ice from Denmark Strait Prof. Nansen sent me V4 of a 'it re - 

 which was treated by Dr. Madsen's method (V. Madsen, Istidens Foraminiferer i Dan- 

 mark og Holsten. Copenhagen 1895). The other sample was not very large. 



