638 ME. E. B. NEWTON ON [Nov. I9II, 



Quite recently MM. Louis Gentil & Jean Boussac l have referred 

 to the presence of Priabonian rocks in the north of Morocco (near 

 Tangier) containing Ortliophragmina and Nummulites fabiani of 

 Prever. 



It will be observed, therefore, that Priabonian fossils have 

 been collected in North African countries as well as in Syria and 

 Palestine, one of the characteristic shells of Tunisia and Algeria 

 being Pecten arcuatus. In the Siwa district of Egypt the beds 

 contain Nummulites intermedius and N. Jichteli, besides a number 

 of mollusca but not including Pecten arcuatus. From Cyrenaica 

 several examples of this Pecten have been obtained, but the two 

 species of Nummulites have not been determined by Mr. Chapman 

 in his report on that group, which suggests a resemblance to the 

 conditions prevalent in Tunisia and Algeria, where N. intermedius 

 appears not to be known. 



The European home of the Priabonian rocks is in the Venetian 

 area of Northern Italy, but they also occur in the Balearic Islands 

 (Majorca), at Biarritz, in the Swiss, Bavarian, and Eastern Alps, the 

 Carpathians, Hungary, and the Balkan Peninsula. Such rocks are 

 to be found also in Armenia, 2 Asia Minor, India, Madagascar, etc., 

 references to all of which must be sought for in Dr. Oppenheim's 

 memoir already mentioned. In adopting Priabonian as the 

 horizon al age for these fossils, it should be quite understood that 

 it may be regarded either as forming the Uppermost Eocene or the 

 Lowest Oligocene, and preferably the latter. Various authors who 

 have studied the Priabonian fauna have differed somewhat as to 

 its position in the geological series. Zittel regarded it as belonging 

 to the highest Eocene or Ligurian, Schweinfurth as Upper Eocene, 

 Mayer-Eymar as both Tongrian and Ligurian, Flick as the Upper- 

 most Eocene, Dr. Blanckenhorn as Lower Oligocene or Ligurian, 

 and Prof. Deperet as Tongrian. 



These fossils come from the neighbourhood of Slonta, Merj, 

 Messa, Kuf Narbea, Mersa Susa, Bint, Derna, shrine of Sidi 

 Abdullah, Wadi Khumas, Ain Hafra, Lamludeh, and Ain Sciahat. 



Gastropoda. 



Euspiea cf. PossAGNENSis Oppenheim. (PI. XLVI, fig. 11.) 



Natiea (Euspira) jpossagnensis Oppenheim, Palgeontographica, 1901, vol. xlvii, 

 pi. vi, fig. 13 & p. 197. 



Remarks. — This specimen consists of a limestone cast with the 

 two latest whorls only, the posterior portion of the spire not being 

 preserved. 



Although of somewhat smaller size, it has much the form of 

 Oppenheim's E. jpossagnensis, described and figured from the 

 Priabonian rocks of Possagno in Austrian Italy. The front view 



1 Bull. Soc. Geol. France, ser. 4, vol. x (1910) p. 484. 



2 See F. Oswald, ' The Geology of Armenia ' 1906, pp. 427 et seqg. 



