302 DR. G. J. HINDE. 



following genera : — Stylophora, Orhicella, Madrepora, 3Iontipo7xi, Heliopora cairulea 

 and alcyonarian spicules. The forarainifera recognised by Mr. Chapman, chiefly 

 in the sample of loose materials, are Miliolina, Orhitolites, Textularia, Verneuilina, 

 Truncatulina, Carpenteria, Pulvinulina, Calcarina, Gypsina, Amphistegina and 

 Heterostegina. 



There are also present echinid spines, Serpula, Spirorhis, polyzoa, Leptoclinum 

 stellates, small lamellibrancbs and gastropods, ovoid coprolitic pellets, fragments of 

 encrusting Lithothamnion and Halimeda. 



Details. 



(C. 29) [315]. Length 75 millims., width 79 milliras. Cylindrical core, of hard cream-coloured 

 limestone. The surface pitted in places and with Sjnrm-bis attached. Entirely of corals, mainly Montipora, 

 with pieces of Stijlophora, Madrepora and Heliopora earulea. A microscopic section of this latter shows 

 the minute structure as distinctly as in recent specimens. Serpula, polyzoa, Leptoclinum stellates and 

 LifJiofhamnion encrusting corals. 



(C. 30). Length 80 millims., width 73 millims. An irregular fragment consisting of a mass of 

 Heliopora eimilea ; in the central portion the corallites are empty, the outer ones are filled up, partly with 

 sediment. The coral covered in places with white, hard, consolidated sediment. 



(C. 31) [314]. Length 67 millims., width 77 millims. Part of a cylindrical core of hard compact 

 limestone, mainly of Monfi/iora, with a fragment of Orhicella. Outer surface of core pitted in places. 

 Orlnfolife.<t, Jmphisfe(/ina. Encrusting Lithothamnion. Cliona borings. 



(C. 32). Length 60 millims., width 52 millims. A rounded nodule of cream-tinted, hard limestone, 

 worn by the drill. It consists of (Jrhieella, cf. 0. orion, Dana, in good preservation. 



(C. 33). Length 44 millims., width 46 millims. A nodule of hard, greyish-white, compact limestone, 

 showing in some parts a pitted surface with Spirorlm attached. The core consists of Montipm-a, sp., 

 similar to that in C. 31. 



(C. 34) [322]. Length 47 millims., width 77 millims. An irregular nodule, worn l^y drill, of hard 

 limestone, consisting of Orhicella, cf. 0. orion, the same as in C. 32. The coral structure well shown in 

 the microscopic section. Encrusting Lithothanmion. 



(C. 35) [320]. Length 131 millims., width 74 millims. A portion of a cylindrical core of compact 

 limestone, with about half the surface pitted and Sjnrorlm growing on it. The core consists of a mass 

 of the same Orhicella as the preceding, with a small Montipoi-a growing on it. Encrusting Lithothamnion 

 in very thin undulating laminje. 



(C. 36) [321]. Length 80 millims., width 75 milliras. An irregular nodule of the same Orhicella as in 

 the two preceding cores. Sjiirorhis, Cheilostomatous polyzoa, LepfocJinum stellates, encrusting Lithothamnion. 



Sample of loose materials, from a depth of 90 feet, consisting of small subangular particles of broken 

 up whitish limestone, with numerous forarainifera and other organisras. The genera raost frequently 

 represented are Orhitolites, Amphistegina and Heterostegina ; other genera of less common occurrence are 

 Miliolina, 'Textularia, Verneuilina, Truncatulina, Carpenteria, Pulvinulina, Calcarina and Gypsina.. Broken 

 fragments of perforate corals are also present, together with alcyonarian spicules, echinid spines, polyzoa, 

 small molluscan shells, fragments of Halvimla, and numerous small coprolitic ovoid pellets. Microscopic 

 sections of some of these pellets show that they are composed of minute fragraents of forarainifera, corals, 

 stellate ascidian spicules, Lithothamnion, and other particles of organisms, closely packed together, 



