REPORT ON MATERIALS FROM THE BORINGS AT FUNAFUTI ATOLL. 301 



(C. 21). Length 22 millims. A fragment of grey-greenish limestone, with Heliopora, and a perforate 

 coral. Polyfrema, Ainphisfcgina, and LifhoHianinion. 



(C. 22) [317]. Length 40 millims., Avidth 80 millims. Cjdindrical coie, cavernons. Composed of a 

 group of small Fuiu/ia (?), with perforate coral, Helioimu carulea, and fragmentary material. OrbitoUtes, 

 Planorhidina, Pohjtrama [Aanuiii, and A mplmtegina. Laijtoclinum stellates. Hulitiicda, abundant, Litho- 

 thamnion. 



Deptli from Surface, 80-85 yee^; Distance Bored, b feet ; Total LengtJt of Core 

 Obtained, 1 foot 1 inch ; Numbers of Cores, C. 23-C. 28. 



The cores are partly cylindrical, partly mere fragments of whitish-grey, hard, 

 compact limestones, composed mainly of corals aggregated together. The corals are 

 very obscurely shown, owing to their interspaces being infilled with fibrous crystals 

 or with fine sediment. The corals belong to Pocillopora, Astrma (?), Orbicella, 

 Porites (?), and Montipora. Millepora is also present. The fbraminifera are repre- 

 sented by Nonionino (?), OrbitoUtes, Gypsina, and Polytrema. Serpula, Spii'orbis, 

 Lithodomus, boring in corals. lAthothamnion. Cliona borings. 



Details. 



(C. 23) [312]. Length 75 millims., width 77 millims. Part of cylindrical core of compact greyish 

 limestone. Mainly of corals ; an Astrsean and Montipm-a, which are encrusted by Polytrema planum and 

 Lithothamnion. OrbitoUtes marginalis, Gypsina inha^rens, and Nonionina (1). Serpula, SpirmMs. 



(C. 24) [318]. Length 41 millims. A fragment of hard limestoie, mostly white, but in places stained 

 reddish. Consists of Podllqjom, bored by Cliona. The structure of the coral preserved, the interspaces 

 mostly filled up solid with sclerenchyma or with fibrous crystals, and occasionally with sediment, containing 

 Carpenteria, and Leptoclinum spicules. SpirorUs. Encrusting Lithothamnion: 



(C. 25). Length 20 millims. A fragment of Millepwa, the pores infilled with matrix. Encrusted by 

 Polytrema planum. Spirwbis. 



(C. 26). Length 46 millims., width 66 millims. An irregular nodule of whitish-grey limestone, partly 

 compact, partly porous, consisting of a perforate coral, encrusted by Polytrema and Lithothamnion. Serpula. 



(C. 27). Length 25 millims. A fragment of limestone similar to the preceding, with perforate coral, 

 bored by Cliona. Polytrema miniaceum. Echinid spines. Seipula-tubes. 



(C. 28) [313, 319]. Length 111 millims., diameter 80 millims. Core cylindrical, with a large hollow. 

 Principally a mass of corals ; Astrcea, Orbicella, and Montipora. Corals encrusted by Litliotlmmnion. 

 Lithodomus borings in Montijjoi-a. Serpula. Gypsina inhcerens. Outer surface of rock covered with 

 small pits, and minute Spirarbis attached. 



Depth from Surface, 'ib-lOb feet ; Distance Bored, 20 feet ; Total Length of Core 

 Obtained, I foot 11 inches ; Numbers of Coves, C. 29-C. 36. 



Cylindrical cores and irregular nodular lumps of hard cream-tinted limestone, with 

 occasional greenish patches where Heliopora is present. Also a sample of loose 

 materials, brought up by the sand-pump from a depth of 90 feet. The solid cores 

 are almost entirely of corals in fairly good preservation. They belong to the 



