270 DR. G. J. HINDE. 



are of common occurrence. The other genera recognised are PociUopora, CoiJorid, 

 and Montipora. LohopliytvAii and detached alcyonarian spicules likewise occur. Tlie 

 foraminifera jjresent belong to Orhitolites, Phmorhtdina, Carpenferia, Calcarina, 

 Gypshia, Pohjlrema, Amphistegina, and lleterostegina. The detrital materials 

 also include echinid spines, *S(?r^jw/« -tubes, Leptoclinmn stellate spicules, and 

 Lit] I oth amnion. 



Details. 



(354a-356a). Total length 304 millims. Mottled greyish, hard, mostly compact dolomite, with a few 

 small hollows. The upper two-thirds of the cores are principally of fragraental materials, the lower third 

 consists largely of Porifcs arenosa apparently in position of growth. The same species also occurs in the 

 upper cores. Casts of Madrepora and Montipora are likewise present. The corals are enclosed by layers 

 of Polytrema pjiuvuii. Alcyonarian spicules, Srrpula. Casts of gastropods. Branching Litliofhumnion. 



(357a). Length .330 millims. Greyish, mottled in places, hard, with some small hollows. About two- 

 thirds of this core consists of casts of Pontes artnom, now for the most pait solidly infilled with crystalline 

 dolomite and partly encrusted with Poli/fn-ina phni>n/i. There are also small casts of Astnva, Madrepora, 

 •dwl Munliponi. The Pon'fes is apparentl^MU position of growth. Ainphistcgina. Serpula-tuhes. Branching 

 LithotJiamnion. Cast of lamellibranch. 



(358a). Length 92 millims. This core is merely an outer shell of rock, similar to the preceding one, 

 with a large hollow originally occupied by Pontes airno^a ; the outer part of the coral is now infilled with 

 crystalline dolomite and overgrown ])y Polytremn. 



(359a). Length 202 millims. Greyish, mottled, and speckled with white {Litliolliauiiuon mostly), 

 hard, with small ca^'ities. .Ixfrmi, MmJirpora rontrrfu, roritca, Montipora (?) overgrown with Poli/trrn/a and 

 LitliotJtainnion. Alcyonarian spicules. Cast of large gastropod. 



(360a, 361a) [778]. Total length 242 millims. Greyish, mottled, hard, partly porous, partly compact; 

 in places cavernous where coral has been partly removed. Mainly of corals. A large cast of Urbicella, cf. 

 0. Funafuiensit!, Gakdixer.* I'orites arenoxa and other forms not determinable. Corals encrusted Ijy 

 Polytremn and Lit/iothamnion. Heferostegina. 



(362a). Length 437 millims. Whiti.sh-gre3% hard, compact to porous, small hollows in places. Small 

 casts of corals, indistinct, only Maitrfpora and Montiporn recognised. Lobojilnjttioi. Greater part of core 

 consists of consolidated minute fragmental materials with Orbitolitfs, (Jarpenirria (casts), Polijtrcma, and 

 Amphistegina. Casts of gastropods. Nodular Lithothamnion. 



(363a, 364a) [779, 780]. Total length 150 millims. Greyish-white, hard, porous in places, cavernous. 

 PociUopora, Maxtrepora, and Porites (irenoso. Larger part of core of consolidated detrital materials Avith 

 Orbitotites, Planorhiilina, Carpenteria, Catmrinu, Gi//isina, I'oli/trema minincmni, P. planum, Amphistegina, and 

 Heterostegina, also alcyonarian spicules, Serpnhi-tvihc», echinid spines, and fragments of Litliotlininnion. 



(365a). Length 167 millims. AVhitish-grey, hard, porous to compact, cavernous in places \vhere 

 corals have Ijeen removed. Core mainly of corals ; PociUopora and Porites nrenosa, a specimen nearly 

 100 millims. in length, and wider than the core (57 millims.), is shown in position of growth. Li the 

 fragmental materials, ('arpcntcrio, Poli/treoui, echinid spines and Litliothuomion. 



(366a, 367a). Total length 274 millims. Whitish-grey, hard, porous, with occasional cavities and 

 efflorescent in places. Mainly of casts of corals ; Pocillojwra, Orbicella Fimnfidensis (?), dvloiia, Mndrepora 

 and Porites arenosa. The corals mostly overgrown with Polytrema and Lithothamnion, Orbitotites, Carpenteria, 

 Amphistegina. Casts of large gastropods. Cliona borings in cavities from which the corals have been 

 removed. 



(368a, 369a). Total length 199 millims. Eock like pi-cceding. Mainly of corals and Ldhofhnmnion. 



* 'Proc. Zool. Soc.,' 1899, p. 75R. 



