66 .lOURXAI, OF CONCTIOI.OnY, vol.. 12, XO. 3, JUT.Y, I907. 



are attached to many of the shells. The plateau lies mostly from 

 fifteen to twenty feet above sea-level, extending in places from forty to 

 fifty feet. It evidently belongs to the younger series of raised coral 

 reefs, described by Barron and Hume under the heading of Pleistocene 

 and Recent. These authorities state that the younger raised beaches 

 and lower coral reefs, which flank the coast, vary in height from near 

 sea-leve! to twenty-five metres (about eighty feet) above. While a 

 higher and older reef series occurring at various levels between 115 

 and 170 metres (about 370 to 570 feet), and from four to seven kilo- 

 metres (from three to four miles) inland, is distinguished — together 

 with other and still older series — by a more or less different fauna 

 from that of the younger. The fragments of coral accompanying the 

 shells appear to be identical with recent reef-building Madreporaria 

 and include Madrepora, DetuirophyUia and Fuugia. Associated with 

 them also are the flattened and bleached tests of a recent echinoderm, 

 Langmiiim depressitm, Nummulites, and Serpulfe. 



To those seeking further information on the subject of the raised 

 beaches and coral reefs of the Red Sea coasts and their conchological 

 fauna, we would advise reference to the following papers: — 



Barron, T. and W. F. Huafe: "Notes on the Geology of the 

 East Desert of Egypt," Geol. Mag., 1901, p. 154- 161. 



Newton, R. B. : "Pleistocene Shells from the Raised Beach 

 Deposits of the Red Sea," Il>id, 1900, p. 500-514, pi. xx,-xxii., and 

 p. 544-560; bibliography, p. 557-558. 



Newton, R. B.: "On some Pliocene and Post-Pliocene Shells 

 from Egypt," /bid, 1899, p. 402-407, pi. xix. and xx. 



LIST OF SPECIES. 

 GASTROPODA. CoNiD.ii:. 



Hrijcid.e. Pleurotoma garnonsi Jieeve 

 Helix (Eremina)desertorum/^('n-X'(y/ Pleurotoma (Turris)violaceay//V/^^ 



TORNATINID/ti:, OlIVID.E. 



Tornatina persiana S}nith Ancilla eburnea Deshayes 

 Tornatina voluta Quay e>" Gai/iiard jMitrip.t:. 



ScAPHANDRiD.i;. Mitra (Costellaria) cadaverosa 

 Atys naucum Linnc Reeve 



Atys succisa A. Adams Mitra (Cancilla) solandri Reeve 



Terebrid/e. Fasciolarid.b. 



Terebra subulata Linne Fusus tuberculatus Lamarck 

 var. consobrina Deshayes Turbinellid.^. 



CoNiD.^.. Vasum turbinellum Linne 



Conus (Lithoconus) vitulinus Pyrula (Melongena) paradisiaca 

 firiiguiere Reeve 



