GLOBIGERINIDAE 



175 



452. Uvigerina pygmaea, d'Orbigny (F 297) (SG 270). 

 Six stations: 180, 383-5; WS 403, 468. 



Common at St. WS403, and frequent at St. 383, where the best specimens were 

 found. Except St. 180 in 160 m., where only two specimens were seen, all the records 

 are from deep water in the Drake Strait and Scotia Sea, 3638-4344 m. 



453. Uvigerina striata, d'Orbigny (F 300) (SG 273). 

 Five stations: 196, 363, 366; WS 474, 498. 



Very rare everywhere, generally a single specimen only. 



454. Uvigerina angulosa, Williamson (F 301) (SG 274). 



Fifty-one stations: 163, 164, 170, 175, 177, 180, 181, 187, 190, 194-6, 198, 200, 203, 363, 369, 

 385-7; 62° 57' S, 60° 20' 30" W; 64° 56' S, 64°43' W; WS 382, 393-5, 399, 468, 469, 474, 476, 

 482, 486, 488, 490, 493, 494A, 496-8, 505, 506, 507 A, 507B, 510-5, 517. 



Although so widely distributed, this species never attains a dominant position as in 

 the Falklands area, in fact at the majority of stations it is very rare. The only stations 

 where it is really common are Sts. 170, 175, 180, 200, 363, WS 505, 506, 507A, 507B, 

 514. There is the same wide range of variation as in the Falklands area. At the stations 

 in the Bellingshausen Sea it attains very large dimensions, particularly at Sts. WS 505, 

 506, 507A, 507B. Most of the records are from moderate depths but they extend down 

 to 4773 m. 



455. Uvigerina angulosa var. pauperata, Heron-Allen and Earland (F 302). 

 Two stations: 386; WS 482. 



A single specimen at each station. 



Family GLOBIGERINIDAE 



Genus Globigerina, d'Orbigny, 1826 



Note. The abnormal specimens of Globigerina referred to in the South Georgia 

 report, p. 120, and figured in that report on pi. iv, figs. 20-2, are found in some numbers 

 in the Antarctic material. Notes have been kept of their occurrence at the following 

 stations : 



In the specimen from St. WS 498 the mouths of the two individuals are in contact, and 

 though they are of dissimilar sizes, it may be a case of true plastogamy. If so I think it 

 is the first recorded instance of plastogamy in the genus Globigerina. 



