REPORT ON MATERTAT.S FRO^F THE BORINGS AT FUNAFUTI ATOLL. 299 



greenish. Hcliopora ccerulm, encrusted iii places hy PnJi/frcma planum. Orbitolifes, Sei-pula-tvihes, small 

 gastropods, branching and nodose TJfliotlicnnninn. 



(C. 4) [301]. Length 40 millims., width 45 niillims. An irregular piece of cream-coloured limestone, 

 Avith Heliopora and Lifhofhamnion. Fragmental materials, partly consolidated, partly as soft white powder, 

 with Nubecularia, MiUolina, OrUtolites, Plaropsilina, Gi/pdna inliccrens, Pohjtrenia planum and Arwphistegina. 

 Echinid spines, SnpjiJ a-tnhes, Leptoclinuin stellates, small gastropods, and coprolitic pellets. 



(C. 5). Length 16 millims., by -56 millims. in width. An irregular fragment of /ie/fo/^o/a, with encrusting 

 LifJiothamnion. 



(C. 5i) [316]. Length 32 millims., width 47 millims. An irregular, cavernous piece of branching 

 Lifhothamnion, with partly cemented sedimentary material containing OrUtolites, Haddonia, and Polyfrema. 

 Echinid spines, Serpida, LeptocUnum. stellates, and small gastropods. 



Depth froon Surface, SO-50 feet ; Distance Bored, 20 feet ; Total Length of Core 

 Ohtnined, 2 feet 3 inches ; Numbers of Cores, C. 6-C. 15. 



The cores are partly cylindrical and very cavernous, partly irregular fragments 

 of cream-coloured, greyish-white and greenish limestone. They principally consist of 

 corals, masses of Heliopiora cwridea being the commonest form, Orhicella, Psam- 

 mocora, and Montipora. The corals are in part embedded in a fine, hard sediment 

 containing Nubecularia, MiUolina, Orbitolites, Valvidina, Planorbidina, Carpenteria, 

 Gypsina inhcerens, Polytrema planum^, and Amphistegina. Also echinid spines, 

 Spirorbis, LeptocUnum stellates, detached calcisponge spicules ; infilled Cliona 

 borings and Lithothamnion. 



Details. 



(C. 6) [302]. Length 23 millims., width 53 millims. A fragment of greyish, porous limestone, composed 

 of foraminifera and detrital organic materials, cemented by " conchite," or aragonite. Fragments of 

 coral structure, MiUolina, Orbitolites, Carpenteria, Gypsina, Pohjtrema pilanurii and Amphistegirui. Echinid 

 plates and spines, Leptodimijm stellates, surroTinded by minute pellets of calcareous mud, fragments of 

 Lithothamnion. 



(C. 7) [304]. Length 16 millims. A piece of Heliopjora ccerulea, encrusted by alternating layers of 

 Polytrema planum and LitJwthwnnion, and embedded in consolidated sediment with LeptocUnum stellates. 

 Carpenteria (1). Cliona borings infilled with fine sediment. Spicule of calcisponge. 



(C. 8). Length 36 millims., width 62 millims. An irregular nodule of greyish rock, sho-wing within a 

 dull greenish tint. Mainly a mass of Heliopora ccerulea, with Polytrema pilanum and echinid spines. 



(C. 9) [323]. Length 128 millims., width 70 millims. Part of cylindrical core of cream-coloured lime- 

 stone, very cavernous, mostly hard, but mth unconsolidated, powdery material in some of the cavities. 

 The rock mainly of Heliopora ccerxdea, with a laminate coral of uncertain character, encrusted by Polytrema 

 and LitMhamnion. Dense, hardened sediment, with Nubecularia, Planorbulina, Carpenteria, and Gypsina 

 inhcerens. LeptocUnum stellates. Calcisponge spicule. 



(C. 10) [324]. Length 123 millims., width 79 millims. Cylindrical core, very cavernous, greyish on the 

 exterior, partly white, partly greenish in section. Rock similar to preceding ; a large mass of Heliopom, 

 also specimen of Orbicella, encrusted by Polytrem/i planwn and by LithotJiamnion. In the hardened sediment 

 Orbitolites, Vahulina, and Gypsina. Echinid spines, small gastropods, LeptocUnum stellates. 



(C. 11). Length 25 millims., width 44 millims. A fragment of whitish-grey, hard, porous rock, 

 composed of undetermined coral, Orbitolites, echinid spines, Halimeda and Lithothamnion. 



(C. 12) [325]. Length 117 millims., \ndth 81 millims. Core cylindrical, greyish-white, with green 



2 Q 2 



