FORAMINIFEBA AND OSTRACODA. CHAPMAN. 



REPORT ON THE FORAMINIFERA AND OSTRACODA. 



I. INTRODUCTION. 



IN 1912, I dealt 1 with a sample of Globigerina ooze taken from 

 1122 fathoms off the eastern coast of Tasmania. In some 

 respects this was a preliminary report, and the results, 

 together with notes on the new and rare species, are included 

 here, in conjunction with descriptions of further samples from 

 the same trawling expeditions. 



Three additional samples of soundings have been exam- 

 ined and their tabulated results are as follows : 



Date. 13th July, 1909 ; station 35. 



Position. East of Tasmania Lat. 42 17' S., Long. 148 

 35' E. 



Depth. 377 fathoms (bottom sample). 



Details. Globigerina ooze. Colour a pale cream. Con- 

 sisting almost entirely of the tests of Globigerina and Pulvi- 

 nulina. In the finer washings numerous stellate, calcareous 

 spicules of Ascidians were noticed. The quantity of material 

 being small, the percentage of carbonate of lime was not 

 estimated, but would be very high. No Ostracoda were seen 

 in this sample. 



Date. 13th July, 1909. Station, 36. 

 Position. East of Tasmania. Lat. 42 17' S., Long. 148 C 

 41' E. 



Depth. Ill fathoms. 



Details. Globigerina ooze. Colour a pale cream. 



CARBONATE OF LIME. 



Percentage. 



Foraminifera. 



Other Organisms. 



76.7 



Chiefly Globigerina and 

 Pulvinulina. Amongst 

 the more interesting 

 genera are Ophthalmi- 

 dium, Sigmo'ilina, Hy- 

 perammina, Brachysi- 

 phon, Rhabdogonium, 

 Spirillina and Patel- 

 lina. 



Echinoid spines and test- 

 fragments abundant ; 

 Ostracoda abundant, 

 many new and interest- 

 ing species being pre- 

 sent ; fish otoliths fre- 

 quent ; also a few 

 Mollusca including 

 Pteropods (Ktyliola). 



1. Chapman, Zool. Res. " Endeavour," I., pt. 3, 1912, p. 309. 



