MATERIAL EXAMINED 31 



*Globigerina pachyderma Pulvinulina karsteni 



Glomospira gordialis Puhimilina peruviana 



Haplopbragmoides canariensis *Reophax siibfiisiformis 

 *Lagena biancae Texttdaria tenuissima 



*Miliammina obliqua Tholosina vesicularis 



*Miliatnmina oblonga *Trochammina malovensis 



*Nonion depressuliim *Uvigeriiia angidosa 

 *Nomonella iridea Virgulina bradyi 



PuUenia siibcarinata * Virgulina schrcihersiana 

 Psammosphaera fitsca 



Very fortunately I received additional material from other nets, frequently from 

 stations at which soundings had also been taken. This corrected the impression, which 

 might otherwise have been formed, that the South Georgian fauna was limited and 

 scanty. The additional material consisted of five dredgings, four samples of trawl 

 residues, and fourteen gatherings taken from nets which had touched bottom or had 

 been attached for other purposes to the trawl. This is not a novel method of collecting 

 Foraminifera ; it has been used with great success on muddy bottoms by both the Scottish 

 and Irish Fisheries Boards. The trawl boards throw up the surface mud which passes 

 through the coarse mesh of the net, leaving behind the larger Foraminifera and sufficient 

 mud to supply the smaller species also. 



These net and trawl residues yielded a surprisingly long list, including several new 

 genera and species. The evidence obtained from dredgings and soundings indicates the 

 sea-bottom in the coastal areas of South Georgia to be a surface of tenacious mud, 

 loaded with Diatoms derived from the surface waters, and having an abundant fauna of 

 small Foraminifera limited in species, and a more sparsely distributed but characteristic 

 fauna of larger species. Many of these are mud-eaters, and find an abundant food supply 

 in the Diatoms, masses of which are found inside their tests. Conditions are so similar 

 everywhere that there is less variation observable than is usually the case. 



Owing to the fact that the area has not been previously investigated there is quite a 

 formidable list of new forms, including four distinctive new genera Gordiospira, 

 Pelosphaera, Armorella and Hippocrepinella, besides Miliammina, which we described 

 from South Georgia in 1930. As regards the last, it is now known that its range extends 

 both southwards into the Antarctic and northwards to Tristan d'Acunha (St. 6) and 

 South African coastal waters (St. WS 4), but I am not at present able to state whether 

 any of the other genera, except Armorella, extend outside the South Georgian area. 



The gatherings from depths outside the coastal waters do not call for many comments. 

 They include Globigerina ooze, diatomaceous ooze, and a few soundings characterized by 

 abundant Radiolaria, though not in sufficient numbers to constitute a true radiolarian 

 ooze. Their foraminiferal faunas are varied but present no special characteristics. It is 

 perhaps noteworthy that, even in the deepest of the soundings, pebbles and sand grains 

 of all sizes are usually present, probably derived from floating ice. 



In conclusion, it may be stated that South Georgia appears, on the evidence at present 

 available, to possess a somewhat characteristic foraminiferal fauna of its own. Dis- 



