278 DR. G. J. HINDE. 



the core. Another specimen, evidently in position of growth, is 70 millims. in height and ahout the 

 width of the core. The specimens are bored hy Lithodomua, the borings are 14 millims. across, and 

 mostly infilled with fine consolidated sediment. Miidrcpora is also present. In the fragmental detritus 

 there aie alcyonarian spicules, rohjirrma plannm, Amphidegina and echinid spines. 



(467a). Length 229 millims. Rock like the preceding. Casts of PoriUopora, Seriatopm-a, ^im-^Xe ksivsuxn, 

 Madrepom and PoriPf:. Amongst the detrital materials there are alcyon;irian spicules, Amphistegina, 

 Heterosfegitia, echijiid spines and branching LifhofliaiimioK. Gastropod casts. 



(468a). Length 251 millims. Whitish-grey, hard, porous, with occasional hollows. Podllopom, AstriGiin 

 coral, genus uncertain, Mfuhrpora roniecta, Porifea. Millepora, alcyonarian spicules. Amphistegina. 

 Lithofhavinion. Casts of gasti'opods. C'lionu liorings. 



(469a). Length 106 millims. Grey with whitish spots in places ; large cavities. Core almost entirely 

 of Porites firenosa, in part solidly infilled with crystalline dolomite, in part porous or dissolved away. 

 Amphisfegiva. Branching Lithothamnio)!. 



(470a) [598]. Length 204 millims. Whitish-grey, mottled, hard, compact to porous. Core mainly of 

 corals. (Jidorid, Psiimmocora (?), Madrepora, Poritcs arenom. Alcyonarian spicules. Detrital material 

 with Placopdlina, OrhifoHtex, common, Textularia rugosa, Carpenteria, Gypsina, Poli/frcma and Amphistegina. 

 Echinid spines. Much encrusting and branching Lifhothamninn, showing the sti'uctiu'e well. Casts of 

 gastropods. 



Depth from Surface, 973-983 /ee^ ; Distaiwe Bored, 10 feet; Total Length of Core 

 Obtained, S feet 5 inches; Numbers of Cores, 47 1a- 490 a. 



Solid cylindrical cores of greyish to greyish-white, hard, dolomitic limestone. The 

 rock is partly compact and partly porous, with cavities in ])laces where corals have 

 ])een removed. Corals are distributed throughout, some cores are principally com- 

 posed of them, in others they are surrounded by masses of coarse fragmental materials. 

 The corals are as usual in the condition of casts ; the structure replaced by crystalline 

 dolomite, and the interstices infilled with consolidated sediment. They belong to 

 Focillo'pora, Coehria, Astrcea, Orbicella, Fungia, Madrepora, Montipora, Porites and 

 AstrcBopora. Alcyonarian spicules are also present. The detrital portion of the 

 cores contains Orbitolites, Haddonia, Carpenteria, Gi/psina, Polytrema, Amphistegina 

 and Heterostegina. Echinid spines, Leptoclinum stellate spicules. Casts of 

 lamellibranchs and gastropods. Encrusting and branching LitIiotham,nion. Infilled 

 Cliona borings. These various organisms and organic fragments are cemented 

 together by crystalline dolomite, which, however, often only partially fills the 

 interspaces. 



Details. 



(471a). Length 270 millims. Greyish-white, for the most part minutely porous, with large hollow. 

 Corals throughout, but about half the core of fragmental materials. C'l'Ioriii, Aslrau (1), Madrcpura and 

 Porites. Corals encrusted by Polytrema pJanvm and JJthotJunmioii. Alcyonarian spicules. Aviphistecjina, 

 echinid spines, branching and fragmentary Lithothamnion. 



(472a, 473a). Total length 229 millims. Greyish-white, compact to porous, with some hollows. Cores 

 principally of coral cast.s ; Madrepwa, Porites and Astrmpm-u. Alcyonarian spicules, Polytrema plamiii), 

 Lithothamnion. Casts of large lamellibranchs. 



(474a). Length 243 millims. Whitish-grey with white spots {Lithothuiiinion) minutely porous. Casts 



