REPORT ON MATERIALS FROM THE B0RINC4S AT FUNAFUTI ATOLL. 267 



(327a). Length 118 millims. C4reyish-white, hard, cavernous, with much cr^'stalline dolomite replacing 

 'orals. Focillopwa, Asfrwa {1), Porifes. ]\)!i/frnini iihintnu. Casts of gastropods. LitJwiJiamnion: 



(328a). Length 331 millims. Orej'ish-white, hard, in upper part with numerous small pores where 

 alcj'onarian spicules and organic fragments have been removed, in the lower more compact. Occasional 

 hollows, lined by crystalline dolomite. Casts of PodUopora, Madrepora, Pontes, and Asfrreapom ; these 

 corals, for the most part, are encrusted with thick layers of Poli/frrma phinmii. Echinid spines, casts of 

 gastropods, and fragments of Lithofhamnion. 



(329a) [772, 773]. Length 202 millims. Greyish-white, hard, for the most part compact, with 

 occasional hollows. Casts of Madrepm'a, Poiites, and other small corals which are not determinable. The 

 corals are encrusted with Pol i/freuia planum and LifJwfhainnion, branching and nodular forms of this genus 

 are also common, and well preserved. In the lower part of this core, and continued into the next, is a mass 

 of Lobophytum, 173 millims. in length, and wider than the core itself (58 millims.). It is overgrown by 

 Polyfrema. In the consolidated detritus, now cemented by crystalline dolomite, there are Orbiiolifcn, 

 Te.rtidaria, Cakarina, Ainphister/ina, Referosfegina, echinid spines, detached alcyonarian spicules, Lcptodinvm, 

 stellates, and casts of gastropods. 



(330a). Length 426 millims. Mottled and banded, greyish-white, hard, mostly compact, dolomite. In 

 upper part a portion of the LohopJtijfwn mentioned above ; the rest of the core consists of a mass of 

 Pohjtrema, branching and encrusting Lithothaiiinion, and Madrepora, with other small perforate corals 

 intergrown together. Orhitoliies, Carpenteria, and Amphisfegina. 



(331a). Length 238 millims. Rock similar to preceding. The core almost wholly consists of perforate 

 corals, replaced by dolomite, and Lifhothamnion. Madrepom conieda and Pwites. Some areas of detrital 

 materials between the corals, with Orbitolifes, Pohjtrema, and Amphistegina, alcyonarian spicules, and casts 

 of gastropods. 



(332a, 333a). Total length 230 millims. Whitish-grey, speckled, hard, mostly compact, with some 

 small hollows. Differs from the preceding in the larger proportion of detrital materials and Lifho- 

 thamnion in comparison with the corals. Only Madrepora recognised. Orbitolifes, Polyfrema, Amphistegina. 

 Gastropod casts. 



(334a, 335a). Total length 225 millims. Greyish-white, hard, cavernous in places. Similar to the 

 preceding, but with the corals somewhat more numerous. Madrepora, Porites, and piece of Lobophytum. 

 Corals replaced by crystalline dolomite and o\"ergrown by Polyfrema plamun and lAthotlmmnion. Branching 

 and nodular forms of this genus abundant. Amphistegina. Gastropod casts. 



(336a, 337a) [774]. Total length 206 millims. Banded, whitish-grey, hard, mostly compact, with occasional 

 hollows. Casts of Porites and other small perforate corals, overgrown with thick undulating layers 

 of Lithofhamnion. Corals very indistinct, largely replaced by crystalline dolomite. Consolidated 

 fragmental materials with Orbitolifes, Te.rfnJaria, Cakarina, Gypsina inhcerens, G. discus, Polyfrema miniaceum, 

 P. planum, Amphistegina and Heterostegina ; also alcyonarian spicules, echinid spines, and branching 

 Lifhothamnion. 



(338a, 339a). Total length 192 millims. Whitish-grey and grey, hard, mostly compact rock, with 

 occasional cavities. The first of these cores contains casts of PodUopora and Porites (?) with encrusting and 

 branching Lithotlmmnion and some Polyfrema and other foraminifera. The second core is nearly altogether 

 a solid mass of Porites arenosa (?) replaced by crj^stalline dolomite. 



(340a). Length 215 millims. Greyish- white, hard, compact to porous. About two-thirds of this core 

 is a continiiation of the same example of Porites as the core above, which is thus 270 millims. in length 

 and of a greater thickness than the diameter of the core (58 millims.). The remainder of the core 

 consists of fragmental detritus with Polyfrema, Amphisfegina and Lithofhamnion, cemented by dolomite. 



2 M 2 



