CONCLUSIONS FROM THE RECORDS 23 



worn and infiltrated with glauconite, are Cristellaria gibba, d'Orbigny, a species found 

 in many deposits and ranging as far back as Cretaceous. The other specimens I have not 

 attempted to identify. 



A minute Bolivinopsis, which I am unable to identify with any species described, was 

 found at St. WS 472 in the Scotia Sea, 3580 m. It has all the appearance of a Cretaceous 

 fossil. 



Owing to Dr Macfadyen's absence from England I have not been able to submit the 

 fossils to him. 



CONCLUSIONS TO BE DRAWN FROM THE RECORDS 



Combining the information obtainable from already published records of expeditions 

 with the results furnished by the Discovery material, we now have a mass of data bearing 

 on the foraminiferal fauna over more than half of the circumpolar seas. The records 

 begin with the ' Scotia' on the eastern side of the Weddell Sea in about 10° W, and, 

 joining up with those of the ' Discovery ', extend more or less continuously to 100° W in 

 the Bellingshausen Sea. Then there is a break until we reach 163° W in the Bay of Whales, 

 from which point we link up with the Terra Nova records extending to about 158° E. 

 Beyond that there is another break until we reach the area of the Gauss Expedition, 

 covering about 95° E-ya" E, from which point we have no information except the lists 

 from one or two Challenger stations, until we return to the Weddell Sea. There are thus 

 three large sectors and gaps from which we have no data : 



A. ioo°W-i63°W, 



B. 158° E- 95° E, 



C. 72° E- 10° W. 



A report by F. Chapman and W. J. Parr on the Foraminifera found by Sir Douglas 

 Mawson's expedition is completed but still unpublished. It will contribute something 

 to our knowledge of the gap B. 



Meanwhile, on the data we already have, I think the following points may be regarded 

 as proved : 



(i) The Weddell Sea foraminiferal fauna is not identical with the fauna of the Scotia- 

 Bellingshausen Seas. 



(2) The foraminiferal fauna of the Scotia and Bellingshausen Seas between 25° and 

 100° W, is identical with the fauna of the Ross Sea between 163° W and 158" E, 

 allowance being made for the development of local species at intervals in such a large 

 area. It follows that the gap A may be considered closed, as we may expect to find a 

 similar fauna existing in the unknown area ioo°-i63° W. 



The Weddell Sea. Pearcey records about eighty-three species and varieties from the 

 Weddell Sea, and the Discovery lists add about thirty to this number, none of particular 

 importance. Even with these additions, it is clear that the Weddell Sea has not a 

 particularly abundant or varied fauna, that the majority are cosmopolitan species, and 

 that Pearcey 's rare or new species do not extend into the Scotia-Bellingshausen areas. 



