34 DISCOVERY REPORTS 



377. TS662A. Fig. II, G I. 



12. iv. 30. 62° 52' S, 58° 43' W. Sounding, 768 m. 



A small quantity of dark brown mud, with a residue of pebbles and sand grains of all sizes, 

 mostly volcanic, and diatoms. Very few Foraminifera, the only species occurring with any frequency 

 being Miliammina arenacea, M. obliqiia, and Haplophragmoides cmiariensis. On the pebbles were 

 Sorosphaera depressa, Tolypammiua vagans and Tholosina vesiciilaris. Nothing very noteworthy 

 among the remaining species, which were represented by single or few specimens. 



382. TS690A. Fig. I, D II. 



13. iv. 30. 61° 27' 30" S, 61° 38*30" W. Sounding, 3647 m. 



The sounding was a cylinder of tenacious light brown clay, a true red clay, showing distinct 

 layers of stratification. Except the harder flakes which were retained on a 30-mesh sieve, nearly all 

 passed through a 200-mesh silk sieve. The residue contained flakes of refractory clay, a few large 

 sand grains, and many Radiolaria, but very few Foraminifera, nearly all arenaceous. Haplophrag- 

 moides subglobosiis, Ammomarginulina ensis and Clavulina communis were frequent, all other species 

 very rare. Spirolocammina tenuis, Cyclammina orbicularis and Spiroplectammina subcylindrica were 

 among the rarer species recorded. 



383. TS 701 A. Fig. I, D II. 



14. iv. 30. 60° 32' S, 62° 42' W. Sounding, 3744 m. 



About 70 cc. tenacious light brown mud giving a residue of small angular pebbles, angular sand 

 grains of all sizes, pellets of clay and many Radiolaria. Foraminifera scanty, none present in any 

 numbers but a great many species represented by single or few specimens, many of them dead shells. 

 Tolypawmina vagans and Saccorhiza ramosa were frequent on the pebbles. Psammosphaera fusca, 

 Haplophragmoides subglobosus, Uvigerina asperula and Globigerina pachyderma the only common species. 

 Among the rarer species were Cassidulina pacifica, C. elegatis, Ehrenbergina hystrix and Spiroplect- 

 ammina filiformis. 



384. TS 7196,7190. Fig. I, D I. 



14. iv. 30. 59° 36' 30" S, 63° 43' 30" W. Sounding, 3663 m. 



About 20 cc. brown mud with visible Globigerinae. Residue a few manganese-coated pebbles 

 or nodules, Globigerina ooze and fine sand. Very few Radiolaria. The nodules were encrusted with 

 Tolyparnmina vagans, and some colonies of Placopsilina confusa and Placopsilinella aurantiaca. The 

 ooze was largely made up of Globigerina pachyderma, which was dominant, G. dutertreivtry abundant, 

 with four other species of Globigeritia in lesser numbers. Lagena was represented by over forty species 

 and varieties, several being new, but the number of each very small, often single specimens. A very 

 long list of other species, many being of great interest. 



385. TS719D. Fig. I, D I. 



15. iv. 30. 58° 41' S, 64° 43' 30" W. Sounding, 3638 m. 



About 70 cc. tenacious biscuit-coloured ooze with a residue of a manganese nodule, several 

 pebbles and large sand grains, some coated with manganese, Globigerinae, Radiolaria and very fine 

 angular sand. Globigerina pachyderma dominant. G. inflata, G. dutertrei, G. conglomerata, G. triloba 

 and G. buUoides in this order of decreasing abundance. A long and varied list of other species in- 

 cluding many forms of great interest. Lagenae were very varied, over sixty species and varieties, but 

 the majority of them very rare. 



386. TS 719 E. Fig. I, D I. 



15- iv. 30. 57° 45' 30" S, 65° 42' W. Sounding, 4773 m. 



About 75 cc. biscuit-coloured tenacious mud gave a residue of Globigerina ooze with a large 

 percentage of fine angular sand and many Radiolaria. Probably 98 per cent of the Foraminifera 

 consisted of Globigerina pachyderma and G. inflata, which were dominant, in association with G. 

 dutertrei, G. bulloides, G. conglomerata (in order of lessening abundance) and Globorotalia truticatulin- 

 oides. A long list of other species, many of great interest, but represented in most cases by very few 



