SECTION III 

 FORAMINIFERA 



FROM ELEVATED DEPOSITS ON THE SLOPES OF MOUNT EREBUS, 



NEAR CAPE ROYDS 



GENERAL REMARKS ON THE COLLECTION 



The Foraminifera here described are from some elevated deposits obtained from 

 two localities on the slopes of Mount Erebus at 160 feet above sea-level. 



Locality 1. — This deposit is composed chiefly of dark volcanic sand with 

 Serpulce and a few foraminifera and echinoid spines ; near Back-Door Bay, about 

 three-quarters of a mile from Cape Royds. 



Locality 2. — This deposit contains, with abundant mollusca, polyzoa (Cellaria 

 spp. and other genera), ostracoda, and foraminifera, some echinoid test-fragments 

 and spines, and numerous siliceous sponge-spicules (tetractinellid) ; about one and a 

 half miles from Cape Royds towards Cape Barne. 



The last-named locality yielded all the specimens of Ostracoda, and the main 

 portion of the Foraminifera of these two Reports. The valves of the ostracoda were 

 exceptionally well preserved, and must have been floated together and covered up 

 by very gentle sedimentation. 



Of the twenty- two species and varieties of Foraminifera here enumerated, twelve 

 are common also to the raised beach deposit south-east of Mount Larsen. They are : 

 Biloculina elongata, Cornuspira involvens, Bulimina seminuda, Cassidulina subglobosa, 

 C. parkeriana, C. oblonga, Ehrenbergina serrata, Nodosaria (Gl.) laevigata, N. (Gl.) 

 rotundata, Uvigerina angulosa, Truncatulina refulgens, and T. lobatula. 



Judging from the general foraminiferal fauna of the Mount Erebus elevated 

 deposits, they were also formed in moderately deep water, like the preceding series 

 from south-east of Mount Larsen — viz. at or near 100 fathoms. The presence of many 

 delicate- shelled Ostracoda in the material from Locality 2 indicates, to my mind, a 

 decided clarity of conditions, as distinguished from the more silty or terrigenous 

 deposit of the sample from south-east of Mount Larsen. 



DESCRIPTION OF THE FORAMINIFERA 



Family— MILIOLIDiE 



Sub- family — MiLiOLiNiNiE 



Genus — Biloculina, d'Orbigny, 1826 



Biloculina elongata, d'Orbigny 



(For references see previous Report) 



One typical specimen found, nearly equalling in size the large forms here figured 

 from the upthrust muds south-east of Mount Larsen. 

 Loc. No. 2. 



II 41 F 



