THE ANTARCTIC FORAMINIFERAL FAUNA S 



III. SOUTH ORKNEY ISLANDS TO CLARENCE ISLAND ON THE 

 CONTINENTAL SHELF AND SLOPE 



Sts. 162-4, 1^7' i69> 170; WS 475. 



The terrigenous muds and net residues received from the South Orkney Islands were 

 very poor in Foraminifera, and presented no features of particular interest except the 

 presence of Gordiospira fragilis , not found elsewhere in the collections, and three species, 

 Hippocrepina oviformis, Hippocrepinella hirudinea, H. alba, of which there are few other 

 records. 



By contrast the dredging made at St. 170, off Cape Bowles, Clarence Island, on a 

 bottom of rock, stones and mud was extraordinarily rich in species, although Foramini- 

 fera formed hardly any visible proportion of the material. Several new species were 

 recorded from this station and many others which were of infrequent occurrence else- 

 where: Sorosphaera socialis, Psammophax comociata, Thurammina corrugata, T. cariosa, 

 Verneiiilina superba, Heronallenia wilsoni, Lagena heronalleni, L. texta, etc. I understand 

 that the material from St. 170 was exceptionally rich in all forms of animal life. Pacific 

 influence is marked in this area by the numerous specimens of Globigerina bulloides, and 

 such other species as Sigmoilina obesa, Rotalia beccarii and Elphidium owenianum. 



IV. SCOTIA SEA FROM 29° 15' W TO 60° W 



Sts. 161, 360, 362, 373 ; WS 199, 201-5, 377, 403, 468-9, 471-2, 474. 



These are all deep-water stations, diatom ooze, red clay, Globigerina ooze, or mixed 

 deposits in which diatoms and Radiolaria predominate over Foraminifera. Arenacea of 

 world-wide distribution and various species of Globigerina form a high proportion of the 

 residues, mixed with a number of species of decided Antarctic facies. A number of new 

 species and several new genera were obtained in this area, generally minute forms. 

 Pacific influence is strongly marked, particularly at the western stations. The only 

 specimen of Hastigerina pelagica was found at St. 161 near the centre of the Sea. 

 Globigerina bulloides and G. triloba were common at Sts. WS 204 and 469, which are 

 very near the convergence. They diminish rapidly in numbers at the inner stations. 

 Among other species indicating Pacific influence are Sigmoilina obesa, S. sigmoidea, 

 Cassididina laevigata, C.pulchella, Spiroloculina pusilla, Ehrenbergina bradyi, Laticarinina 

 pauperata, Globorotalia hirsuta, G. scitula, Verneuilina bradyi and Gaudryina ferniginea. 



V. DRAKE STRAIT FROM 60° W 

 Sts. 382-7 ; WS 400. 



The material came from a line of deep-water stations, 382-7, between the South 

 Shetlands and Cape Horn crossing the convergence between Sts. 385 and 386; and 

 another St., WS 400, not far from St. 382. The southern stations were red clay, passing 

 into Globigerina ooze towards the northern side of the Strait. Very long lists of species 

 were obtained at all the stations except Sts. 382, 387 and WS 400, including many 

 genuinely Antarctic species. Globigerinae and Globorotaliae of various species form the 

 bulk of the foraminiferal residues at Sts. 384-7, but (except G.pachyderma, common) are 



