EEPORT ox MATEKIALS FEOM THE B0RINC4S \T FUNAFUTI ATOLL. 237 



of the core. Huliincda and Lilhothamnion (1). 8tiuc'ture of the orgiinism« rephiced hy the crystalline 

 dolomite. 



(359). Length 69 millims. Cylindrical. The same soft, white, porous rock as the preceding. The only 

 coral recognised is a cast of I'uciUopora. Principally of foraminifera [576], including Pulrimdina, Glohigcrina, 

 C'arjjenterm, Poliifreinaplannin (large chambered variety) prominent, Ciypdna, Amphintegina, Heterodegina and 

 Cj/chcli/peiis. HaJlmeda abundant. 



(360). Length 93 millims. by 54: millims. in diameter. Core cylindrical, of the same kind of rock as the 

 foregoing. A single cast of an Astraean coral, apparently a simple form. Probably the same foraminifera 

 as in the preceding, but only Carpenteria, Pohjtrema, Anqjlmtegin-a, and Cijduclijpeus are visible under a lens. 



(361). Length 85 millims. Cylindrical; the same kind of rock as previously. Cast of undetermined 

 coral. The same forms of foraminifera [577] as in core 359, with the addition of Tc\didaiia ; Poli/fn'ina 

 planum very prominent. Hal imeda- joints numerous; Lithothamnion, not common, encrusting the Puhjtreina. 

 Echinid spines and plates. 



(362). Length 76 millims. Cylindrical, rock similar to preceding. Cast of small fungid coi'al. Mostly 

 foraminifera], probably same forms as preceding, but only Pohjtreiiia iMnum and C jjduchjpjeus can be 

 recognised imder a lens. Halimeda abundant. 



(363). Length 62 millims. Cylindrical. Rock white, porous, readily scratched by nail, like preceding. 

 Cast of small Fungia [578]. Glohigerina, Pohjtn'um planum, Amphidegina, Hekrudegina, and Cgdochipeus. 

 Halimedarjomts, abundant and fairly well preserved. 



(364). Length 35 millims. Cylindrical. White porous dolomitic rock like the preceding. Casts of one 

 or two small corals, but not determinable. The foraminifera [579] include Orhitolites, Globigerinu, Carpenkria, 

 C'alcarina, Ggpsina, Pohjtrema plamun, very prominent, forming encrustations with subordinate alternating 

 layers of Lithothamnion .• Amphidegina, Heterodegina, and Cydodypeua, common. Halimeda abundant. 



(365, 366). Total length 124 millims. Two cylindrical pieces of core of the same dolomitic rock as the 

 preceding. They are largely foraminiferal [580, 581, 582] and contain the same forms as the preceding, 

 with the exception that Discorhina occurs, whilst Carpenhria is absent. No corals have been noticed. 

 Pohjtrema plmwin is abundant and forms nodular lumps consisting of undulating layers, alternating with 

 layers of Litliothamnion. Cijdodijpem common. Haliiiwda-ioints. 



The core No. 366 is the last m the series of the upper part of the JNiaiii boring 

 from the surface down to 698 feet. With the lower part of the boring, which extended 

 from 698 feet to the bottom at 1114 feet from the surface, a new series of numbers for 

 the cores was introduced beginning with lA and reaching to 709a. 



Depth from Siwface, 698-706 feet ; Distance Bored, 8 feet ; Total Length of Core 

 Ohtained, 8 inches ; Numbers of Cores, lA, 2a. 



The cores are cylindrical, of whitish, porous, dolomitic limestone, harder than the 

 preceding, so that they cannot be scratched by the finger nail. The rock is mainly 

 composed of foraminifera and Halimeda-^oints. Only a single small cast ofMadrepo7'a 

 recognised. 



Details. 



(1a). Total length 109 milHms. Two cylindrical pieces of whitish dolomitic rock, very porous and 

 crystalline. Amphistegina, Heterodegina, and Cijdodypeus. Halimeda, abundant. Echinid plates. 



(2a). Length 83 millims., diameter 56 millims. Dolomite, similar to preceding, the pores lined by 

 minute rhombohedral crystals. The most abundant constituent is Halimeda, a small cast of Mmkepora is 

 also present. The foraminifera include [681] Pohjtrema planum, Gypsina globulm, Amphidegina, Heterodegina, 

 and Cydodypeua. Echinid spines in fragments. Cast of lamellibranch. 



