1036 



MR F. GORDON PEARCEY ON 



List of Foraminifera from Station 420 — continued. 



Webbinella hemisphxrica (P. and J.). 

 Crithionina pisum, var. hispida, Flint. 

 Thurammina papillata, Br. 



,, favosa, var. reticulata, var. nov. 



Tol ypammina vagans (Br.). 

 Awmolagena clavata (P. and J.). 

 Haplophragmoides trnUissata (Br.). 



„ glomeratum (Br.). 



„ rotulatum (Br.). 



„ umbilieatum, sp. nov. 



,, subgloboswn (G. 0. S.). 



Cribrostomoides bradyi, Cushn. 



Cyclammina cancellata, Br. 



,, pusilla, Br. 



,, contorta, sp. nov. 



Ammobaculites tenuimargo (Br.). 

 Placopsilina vesicularis, Br. 

 Glohigerina dutertrei, d'Orb. 



,, pachyderma (Ehrng.). 



Pullenia sphseroides (d'Orb.). 

 Truncatulina wuellerstorfi (Sch.). 



„ pygmsea, Hantk. 



Anomalina polymorpha, Costa. 



Station 421, lat. 68° 32' S., long. 10° 52' W. 



Depth 2487 fathoms ; bottom temperature 31°'5 F. A glacial clay similar to that 

 from Station 420, but containing 5 per cent of lime. Only a small quantity was 

 received for examination, in which the following were observed : — Glohigerina buUoides, 

 G. dutertrei, G. duhia, Pullenia sphseroides, and Truncatulina wuellerstorfi. 



Station 438, lat. 56° 58' S., long. 10° 03' W. 



Depth 2518 fathoms. A Diatom ooze with a large amount of volcanic mineral 

 particles. Slight traces of lime. 



Only a very small quantity was sent me, and the only Foraminifera found were one 

 specimen of Cyclammina pusilla and a few Glohigerina dutertrei. 



Station 447, lat. 51° 07' S., long. 9° 31' W. 



Depth 2103 fathoms. A typical Diatom ooze containing 9 per cent of lime. 



Foraminifera well represented, including : 2 Miliolidse, 11 genera of the arenaceous 

 types, 3 Textularidae, 4 species of Lagena, including the rare forms L. staphyllearia 

 and L. feildeniana ; Glohigerina dutertrei moderately abundant ; 3 species of Pullenia, 

 2 of Truncatulina, 2 of Pulvinulina, 1 Rotalia, and 2 of Nonionina. 



Station 451, lat. 48° 06' S., long. 10° 05' W. 



Depth 1741 fathoms. A deposit transitional in type between Diatom ooze and 

 Glohigerina ooze, containing 55 per cent, of lime and 30 per cent, of siliceous 

 organisms. 



The (rlobigerinidse are the predominating types present, the only two arenaceous 

 forms found being Proteonina dijfiugiformis and Gordiammina charoides. The 

 characteristic feature of the Foraminifera from this station is the presence of the more 

 northern types, such as Bolivina nohilis, B. reticulata, Bulimina aculeata, B. huchiana, 



