246 DE. a J. HINDE. 



AmphUfciiina, Hcteiv^ffginn. Lithothamnion. Less fragmeiital material in this than in preceding cores, and 

 the organisms can 1)e more distinctly seen. 



(86a) [706]. Length 90 millims. Greyish- white, hard, compact, with a few cavities. Several 

 casts of coi'als, including Fimr/ia, the width of the core (57 millims.), also perforate coi-als, Miuhrim-a and 

 Montiporn (?) ; their structures are replaced liy dolomite, whilst the interstices are infilled with sediment, 

 and they are enclosed by alternating layers of Pohjtreina planum and Lithothamnion. The foraminifera 

 include Orhitolitcs, Gi/jmna discus, Ainphistcijiim, and Heterostegina. Plates of echinids. Fragments of 

 Lithiithainnion. Joints of Ilalimnta, showing their tubular structure very distinctly under the microscope, 

 calling to mind that of Oirvanella from the Silurian rocks. Alcyonarian spicules. The organisms are 

 cemented by crystalline dolomite.. 



(87a). Length 2.5 millims. Greyish-white, hard, generally similar to preceding. Cast of Madnpora {f). 



(88a) [707]. Length 42 millims. Mottled white and grey, hard, porous. Mainly of coral casts, 

 now replaced by crystalline dolomite, and penetrated In' borings of ('li(ma and other organisms, so that 

 their original characters cannot l)e determined. The borings are infilled with consolidated mud. PoJiitrcma 

 and .lmphisf('[/in>(. 



(89a). Length 100 millims. Mottled gioy and white, hard, dense dolomite. Many small 

 perforate corals, including Maihrjiora cimtcrfd, enclosed liy thick layers of Pnli/irrma phinvm and LWto- 

 fhamiiion. Between the corals Amphisti'ijinu and Jlctcrosttr/ina. HaUma/a-iomti^. 



(90a). Total length 240 millims. Gi-eyish-white, hai'd, compact to jjonms, with some cavities. 

 Core largely of coral casts enclosed by I'lilt/t/rnni /ildnum and Lithothamnion. Orhicclki, cf. 0. arropora 

 and Mailrrjiii/'ii, many casts not determinable. Am/ihisfr(/inii and Ifrlmistrgina. Llalimcda. 



(91a). Length 136 millims., diameter r)7 millims. Rock of the .same character as preceding. 

 Casts of small Astraean, Mailrepma, and others not determinable. About half the core foraminiferal ; 

 I'oJi/trema and Amjihistriiinn, very numerous. Casts of lamellibranchs. 



(92a) [708]. Length 100 millims. Mottled, grey, and white, hard, dense, partly porous, partly compact, 

 with a few cavities. Many casts of coi'als, I'oriUojioia, two kinds of Astraean corals and Mndir- 

 jioia. The corals reijlaced by dolomite are dissolved ; the interstices either infilled by sediment or 

 crystalline. Gi/jisina, Pali/t/rma, Ampihistegina, and Hctcnistcfiino. Lilti<itli<tmniiiii in undulating layers. 

 Halimeda. Casts of lamelliltranchs. Srrpntii. 



(93a). Length 7-") millims. Whitish-grey, hard, mostly compact, but witli a large patch 

 where the rock is porous. Several coral casts, one an Astrsean, also Tnrhinaria and others not deter- 

 minable, showing only infilled borings of Cliona. Corals overgrown by Poh/trcma and Litliothamnion. 

 Core packed with foraminifera, principally A mpliistcijina Ij'ssimii. Alcyonaiian s^^i^'^i'cs. 



(94a) [709]. Length 30 millims. Rock similai- to preceding. Cast of Astisean coral replaced 

 by dolomite, and the interstices filled in with sediment. Alcyonarian spicules ; thick layers of 

 Poli/trrma jdanitm and IJfhothainnion, with foiaminiferal and other detrital materials cemented by 

 crystalline dolomite. 



(95a). Length 78 millims. Rock of same character as 9lA. Casts of perforate corals ; Madrepora and 

 Monti poro (?). Corals small, and as usual encrusted by PaJt/trema and Lithofhanmion. Afiipltisteiiina, very 

 numerous. 



(96a). Length 100 millims. AVhitish-grey, hard, porous rock. With the exception of two small 

 examples of Porillopvra and Madrepwa, the core is foraminiferal and fragmental, the predominant form 

 being A mjd/istt'f/ina Ijsssoiiii. Casts of gastropods. Halimeda-ioints. 



