202 DR. G. J. HINDE. 



iubrutunda, OrhUoUks cuinplanata, 0. iimn/inaUs, Te.dularia sagittida, var. jiduloM, Cristcllaria arlicvlafa, 

 Sagrina raphanns, Spirillina vivipam, Spirillina, sp. nov., Discorhina patelliformis, Discorhina, sp. uov., Trun- 

 catulina rostrata, Gi/psina vesicularis, Polytrema miniacmm, also var. alba, Amphistegina Lessonii, Heterostegina 

 depressa. With the exception of the two last-named species, which are very common, the forms are rare, 

 and the majority are only represented by single specimens. 



Alcyonarian spicules are very abundant. They are detached, varied in size, strongly tuberculate, and 

 probably belong to the genus Lobophjtum. Echinid spines are abundant and well preserved as regards 

 their structure, but for the most part they are only fragments. Detached test plates of Cidaris are present, 

 also portions of the dental apparatus of echinids. There are a few fragmentary three-rayed calcisponge 

 spicules, but no spicules of siliceous sponges have been met with. Entomostraca are represented by a few 

 valves of a species of Bainlia. 



Claws of small crustaceans occur, l)ut they are not common. Minute fragments of polyzoa are numerous , 

 also the minute stellate ascidian spicules referred to Leptodinuiii. Thcndea maxilla. Small forms of 

 gastropod shells and detached opercula, are fairly plentiful, the shells range in length from 0"7 millim. to 

 2-5 millims. and in greates^l width from 0-25 millim. to 1-5 millims. Mr. Edgar A. Smith, of the 

 British Natural History Museum, has recognised the following genera : Cerithinm, Triforis, MargineUa, 

 Lepfofhi/ris (opercula only), Ci/dostirnia and Iiisscdtia. Small o^■oid pellets, probably coprolitic in character, 

 are very numerous. Detached joints of HaUmeda, also joints of corallines, either singly or three or four 

 in connection, are of common occurrence. 



(75, 76). Two irregular pieces of hard coral rock, together 76 millims. in length, of Madrejwra ivniecfa 

 and an undetermined coral. The corals mostly infilled solid with sclerenchyma, iVc, and partly overgrown 

 with Liihvtharrndou. 



(77). Length 30 millims. An irregular nodular fragment, woin l)y drill, of Heliopora ccendea, encrusted 

 by successive layers of Lifhotlnnnnidii. The coral is of a dirty green colour, and the tubes are now solidly 

 infilled with sclerenchyma. 



(78). Length 101 millims., width 77 millims. A cylindrical core of Madrepora conteda. The coral 

 somewhat cavernous where excavated l)y boring organisms, in places also encrusted by Lithothamnion. 



(79, 80, 81). Length 66 millims. altogether. Lregular fragments of hard coial rock consisting of 

 Madrcpara and of an undetermined perforate coral encrusted by Lithothanndon. 



(82). Length 65 millims. Hard nodular mass of Madrepm-a conteda, mostly infilled solid. Li places 

 bored by Clionn. Parts of surface unevenl^^ pitted and with minute Spinrrhi:^ attached. 



(83) [513]. Length 50 millims. A nodular mass of M. conteda similar to the preceding ; overgrown in places 

 by Lithothamnm}. The coral structure is well preserved, as seen in section under the microscope ; the 

 interspaces are partly empty, partly filled with prisms of " conchite." 



(84). At 70 feet. Fragmental materials coarse and fine, the greater part angular chips or fragments 

 of hard grey coral rock broken up l)y drill. Mingled with these there are a few foraminifera, alcyonarian 

 spicules, echinid spines, opercula of gastropods, coprolitic pellets, and joints of corallines. The foraminifera, 

 as determined by Mr. Chapman, are : SpiriUiiia sp., nov., Pulvinidinu repanda, Gypdna globulus, one 

 specimen each, Polytrema miiiiaceum, also var. alba, Amphistegina Lessmui and Heterostegina depressa, 

 common. 



Depth from Surface, 70-^Q feet ; Distance Bored, 10 feet ; Total Length of Core. 

 Obtained, \ foot 1 inch; Numbers of Cores, 85-93. 



The only solid cores in the 10 feet are irregular nodular fragments of hard, whitish- 

 grey, or cream-tinted limestone, technically termed "knoblings" ; they are rounded 

 to some extent by the drill. These nodules are almost entirely of Madrepora contecta, 

 in the same condition of preservation as the specimens in the cores above. With the 



