114 "TERRA NOVA' EXPEDITION. 



1()8. Tiochammina ringens, Brady. 



TrochawmiHa rim/ens, Brady, 1879, etc., RRC, 1879, p. 57, pi. v. figs. 12 «, b ; 1881, FC. p. 343, 

 pi. xl, figs. 17, 18. 

 „ Millett, 1898, etc., FM. 1899, p. 365, pi. V, fig. 14. 



Station 6. 



Two very fine examples. 



169. Trochmmnina pauciloculata, Brady. 



Trocliainmina pauciloculata, Brady, 1879, etc., RRC. 1879, p. 58, pi. v, figs. 13, 14 ; 1884, 



FC. p. 344, pi. xli, figs. 1, 2. 

 Ammochilostoma „ Cushman, 1910, etc.', FNP. 1910, p. 126, figs. 197. 



Stations 7, 8, 10, 11, 29, 32, 35, 40, 55. 



Most frequent and best at Station 10. At Station 29 specimens were oi' 

 a cmiously elongate narrow-chambered form, evidently pauperate. 



170. Trochammina galeata, Brady. 



Trochtmminu (jukata, Brady, 1879, etc., RRC. 1881, p. 52 ; 1884, FC. p. 344, pi. xl, figs. 19-23. 

 Cushman. 1910, etc.. FNP. 1910, p. 127, figs. 198-201. 



Stations 29, 40. 



One unquestionable, and two not so satisfactory, examples at tliese Stations. 



171. Trochammina robertsoni, Brady. 



Trochammina rohcHsoni, Brady, 1876, CPF. p. 80, pi. iii, figs. 6, 7. 



Wright, 1891, SWI. p. 469, pi. xx, figs. 4, a, b. 

 Goes, 1894, ASF. p. 30, pi. vi, figs. 231-234. 



Stations 13, 29, 34, 35. 



The specimens, though few in number, jji'esent considerable variation. At 

 Station 29 they are very large and the shell has not the smooth finish due to 

 excessive cement which usually marks the species. At Station 34 a single very 

 thin-walled and pauperate individual ; at Station 35 it was quite typical. 



172. Trochammina rotaliformis, Wright. 



Trochammina injlata (Montagu), var.. Balkwill and Wright, 1885, DIS. p. 331, ])I. xiii, figs. 

 11, 12. 

 rotaliformis, Heron-Allen and Earland, 1914, etc., FKA. 1915, p. 620. 



Stations 2, 4, 6-8, 10, 11. 13, 15, 16, 25, 27, 29, 31, 33, 35, 38, 40, 42-44, 46-50, 

 52-55 (+ T. d. F., D.). 



Almost universally distributed and extremely connnon in the Antarctic area, 

 especially at Stations 38 and 54. Besides the usual range of specimens running 

 back towards T. squamata, a few specimens are to be met with at most Stations 

 where it is abundant, ranging towards T. vesicularis, Goes (G. 1894, ASF. p. 31, 

 pi. vi, figs. 235-237), which has more whorls, and more segments to the whorl, 

 and generally speaking a more pronounced rotalian contour than Wright's 



