G6 "TERRA NOVA' I^XPEDITION. 



31. Miliolinatricarinahi ((rOrbigny). 



Triloculina tric.ariiinta. d'Orbigny, 1826, TMC. p. 290. no. 7, ModMe no. 9-1. 

 Miliolma „ Heron-Allen and Earland, 1914. etc., FKA. 1915. p. -562. 



Stations 3, 5, 6, 16. 18, 19, 27, 31, 35, 38, 48. 50, 53, 54, 55. 



Occurs in both the long ■• hazel-nut "" type and the short robust form, the 

 best at N.Z.. Station 6, where the short form attains fine dimensions. Tlie long 

 form occurs only at Station 5 in the N.Z. area, but occurs to the exclusion of 

 the short form in the deep-water Stations, between N.Z. and the Antarctic 

 Continent. The short form reappears at Station 31 and occiu's exclusively from 

 there to the most southern latitudes, attaining, better development as one 

 approaches the shallower Stations of the Antarctic coast, the best individuals 

 being obtained at Stations 38. 48, 54, and 55. 



32. Milioliiia bosciana (dOrbigny). 



Quinqueloculina bo.sciana, d'Orbigny, 18.39, FC. 191. |il. .\i, figs. 22-24. 

 Miliolina hosciaiia, Heron-.Vllen and Earland, 1914. etc.. FKA. 1915, p. hW>. 



Stations 2, 3. 5. 6, 48 ( -h Kl). 



Represented in the N.Z. area by single specimens only, except at Station fi. 

 and all small. In the Antarctic by a single small specimen at Station 48. 



33. Miliolina obloiu/a (Montagu). 



Veniiiciihnn ohlonipim, Montagu. 180.3, TB. p. 522, pi. xiv, fig. 9. 

 Miliolina ohioiiga, Heron-Allen and Earland. 1914, etc., FKA. 1915, p. 56G. 



Stations 1-3, 5, 6, 15. 31. 36, 38 (-fR. d.J.). 



Occurs in liotli the originally described and figured square-cornered form, and 

 in tlie roimded type, figured l)y Brady. In the N.Z. area the square form pre- 

 flominates. the best being at Stations 1 and 5. At Station 3 the round form 

 only occurs ; at Station 6, both types together. Rare in the Antarctic, the round 

 form at Stations 15 and 31 : lioth types at Station 36. It is noticeable that the 

 round type is always more thin-shelled and feebler than the angular, but none 

 of the fragile type noted by us from West Scotland (H-A & E, 1916, FWS, 

 p. 210) was seen in the ]naterial. 



34. Miliolinn oblonga, var. arenacea, Chapman. 



■Miliolina oblonga. var. arenacea, Chapman, 1914, FOES. p. 59, ]>]. i. fig. 7. 



alveoliiriformix. Faure-Fremiet. 1913. etc., FMAF. 1914. p. 4. ]il. O. fig. 5. 



Stations 26, 27, 29, 32, 33, 41-45, 48, 50, 51, 52 (+K. I., I).). 



This is the most typical jMiliolid of the Antarctic area, and presents a con- 

 siderable range of form. The rounded type predominates, and represents the 

 variety at most of the Stations, but the angular form occurs in its company at 

 Stations 27, 43, 44, and 52. The test is very fragile and delicate ; and the 

 calcareous constituent, if present at all, nmst be very limited in quantity. The 

 colour varies con.siderably. In the deeper water the specimens are a very j^ale 



