250 Christmas Island. 



Heterostegina depressa, d'Orbigny. 



This species is rare. One fine specimen, cut vertically, sliow& 

 a megalosplieric commencement. 



No. 963. Blocks fallen from High Cliff, south of Plying Pish 

 Cove; probably close to 841. 



E-ock composed of crystalline calcite. Some Lithothamnion and 

 Salimeda, numerous foraminifera, and an echinodcrm spine. This 

 appears to be a transition rock between the Miocene and the recent 

 limestones. 



Poraminif era : 



Gloligerina huUoides, d'Orbigny. Several. 



Gloligerina conglolata, Brady. One specimen. 



Flanorhulina larvata, P. & J. Occasional. 



Carpenteria monticularis, Carter. Fragments numerous. 



Carpenteria utricularis, Carter. One good specimen. 



Gypsina glolulus (Eeuss). One specimen. 



Folytrema miniaceum (Pallas), var. involva, Chapman, nov. 

 (encrusting form). IS'umerous. 



Amphistegina lessomi, d'Orbigny. Prequent. 



Orhitoides {Lepidocyclina) verheehi, I^ewton & Holland. Frag- 

 ments (? derived). 



No. 549 is a specimen of the rock occurring at the base of the 

 inland clifi at 500 feet, running south from the south-east end 

 of Plying Pish Cove (see Map). It is a whitish or pale cream- 

 coloured limestone, with some travertin. Besides many foraminifera 

 (including Orhitoides) it contains Lithothamnion and polyzoa in 

 small quantity. 



The foraminifera noticed are as follows : — 



SpirolocuUna, sp. 

 Apparently an arenaceous form, but indeterminable. 



Miliolina auberiana (d'Orbigny). 



QuinquelocuUna auberiana, d'Orbigny, 1839, Foram. Cuba, p. 167, pi. xii, 



figs. 1-3. 

 Miliolina auberiana (d'Orb.), Brady, 1884, Eep. ChalL, vol. ix, p. 162, pi. v, 



figs. 8, 9 ; Goes, 1894, Kongl. Svenska Vet.-Akad. Handl., 



vol. rxv, p. 109, pi. xix, figs. Siia-d ; MUlett, 1898, Journ. 



R. Micr. Soc, p. 505. 



One specimen was seen in our slide of JS^o. 549. 



