R. Bnllen Newton — Egyptian Cretaceous Shells. 395 



in favour of a Turonian age — an opinion somewhat suggested by the 

 paleeontological work of M. Jules Welsch,^ who has discovered in 

 Algeria, Sphm-uUtes (Saiivagesia) Sharpei, Bayle, a typical Turonian 

 shell of Portugal, associated with Ostrea acanilionota, 0. Boucheroni, 

 etc. This author, therefore, inclines to the belief that the majority 

 of Algerian species hitherto recogniaed by Coquand, Peron, and others 

 as of Santonian age, are more probably Turonian. If this be 

 accepted, then the Cretaceous rocks near Cairo (Abu Eoasch, etc.), 

 containing similar shells, which have been considered as Senonian 

 by Schweinfurth, Walther, etc., should equally be regarded as 

 Turonian, though apparently the Portuguese mollusc, Sauvagesia 

 Sharpei, has not yet been identified in Egypt. 



"Hills W. of Jebel Zait" and "Sheet 33" are districts given 

 for other of the fossils referred to in this paper. The specimens 

 from the former were probably obtained from the Cretaceous outliers 

 occurring to the south-west of Jebel Zait (see Zittel's map), whilst 

 those marked " Sheet 33 " might come from the same area, on 

 account of a similarity of matrix, although no explanation has been 

 sent as to the region embraced in this particular division of the 

 Egyptian map. These shells are likewise recognized as Turonian. 



GASTEEOPODA. 



Genus NEEINEA (Defrance), Blainville, 1825. 



Diet. Sci. Nat., 1825, vol. xxxiv, p. 462, pi. xxxiv, fig. 3 ; Man. 

 Malacologie, 1825, p. 404. 



Type. — Nerinea nodosa, Voltz (=Neriue tuberculeuse, Defr.), [syn. 

 Helicoceras, Kouig, 1825]. 



Nerinea Eequieniana, Orbigny. PI. XV, Figs. 1-4. 



Nerinea Eequieniana, Orbigny : Pal. Frangaise Terr. Cretaces, 1842, 

 p. 94, pi. clxiii, figs. 1-3 ; Fraas : " Aus dem Orient," 

 1867, p. 96. 



Nerinea pyramidarnm, Mayer-Eymar, " Zur Geologie Egyptens " : 

 Yiert. Nat. Ges. Zurich, 1886, vol. xxxi, p. 246. 



Description. — Testa elongato-conico, imperforata ; spira, angulo 

 21°; anfractihus angnstatis, Icevigatis, in/erne Umhatis ; apertura 

 subquadrata, 5-lohata ; labro 1-pUcato ; columella 3-plicata. 

 (Orbigny.) 



The above original diagnosis applies to a species of large size, 

 slightly pupoid, compressed, non-umbilicated, and with numerous 

 whorls (about 20) ; the whorls are depressed, slightly concave, and 

 convexly margined at the base ; sutural band narrow (1 mm. 

 wide), sunken, and immediately below the rounded edge of the 

 whorl; surface bearing longitudinal striations, inflected near the 

 suture, and more apparent on the later than on the earlier whorls ; 

 aperture subquadrate, with a prominent, nearly central tooth on the 



1 J. Welsch, Bull. Soc. Geol. France, ser. 3, vol. xviii (1890), p. 493; ser. 3, 

 Tol. XXV (1897), p. 55-1 ; aud P. Choffat, ibid., ser. 3, vol. xxv (1897), p. 470. 



