261 



NOTES ON THE OLDER TERTIARY FORAMINIFERAL 

 ROCKS ON THE WEST COAST OF SANTO, NEW 

 ^, HEBRIDES. 



By Fkederick Chapman, A.L.S., F.R.M.S., National Museum, 



Melbourne. 



(Communicated by Professor David.) 



(With Plates v.-viii.) 



CONTENTS. 



PAGE. 



i. Introduction ... ... ... ... ... ... •■• ••• 261 



ii. Description of the Rock Specimens .^ ... 262 



iii. Distribution List of the Foraminifera, with Notes on the New and 



Rare Forms 26S 



id iv. Note on the Ostracod 272 



V. Summary of Results 273 



I.Introduction. 



A short while ago I received some samples of rocks, collected 

 in the New Hebrides, from Prof. T. Edgeworth David, of Sydney 

 University. These rocks are chiefly limestones, and there was 

 included a foraminiferal tuff. 



Since the exact geological age of the Tertiary rocks in the New 

 Hebrides is a matter of particular interest, I have, with the per- 

 ' mission of the Director of the National Museum, dealt with them, 



at the request of Prof. David, in order to ascertain that fact. 

 The specimens which form the subject of this paper were collected 

 in the Island of Santo (Espiritu Santo) by Mr. Douglas Mawson, 

 B.Sc, B.E., of Sydney University. 



The more recent reef-rocks found at considerable elevations in 

 the islands of this group have already been referred to by Dr. G . 

 J. Hinde, in an Appendix to Lt. Frederick's paper '* Geological 



