80 I'KOCEEDINGS OF THK MALACOLOGICAL SOCIETr. 



YOLUTA BeADNELLI, 110111. lUUt. 



I'lifhinella prisai, Locard, Moll. Tert. iiif. Tuuisie, 1888, p. 7, pi. vii, 



fig. 4 {)io!i Conrad). 

 Voluta (Vohifoli/ria) Arabica, Mayer-Eymar, Journ. Coucliyl., vol. xliii, 



p. 52, pi. iii, fig. 1, 1895 {iion Gmeliii). 

 V. Arahica, Cossnianu, Bull. lust. Egyptieii, 1901, p. 177, pi. i, 

 fig. 2 ; Oppenheim, Paloeontogvaphica, vol. xxx, pt. iii, fasc. 2, 

 p. 327, pi. xxiv, figs. 12, 13,^1906. 

 Remarks. — This entry is made to call attention to the necessity! 

 of introducing a new specific name in place of J'oluta Arahica, which' 

 is ])reoccupied. 



Formation. — Lutetian (Upper Mokattam). 

 Locality. — Xear Dime. 



This species is also found in rocks of the same age in the neighbour- 

 hood of Cairo. 



TuKKiTELLA TRANSiTORiA, Mayer-Eviuar. PI. Ill, Figs. 3, 4. 

 Tarritella angulata, Bellardi, Mem. E.. Accad. Sci. Torino, ser. ii, 



vol. XV, p. 175, 1854 {^lon J. de C. Sowerby). 

 T. transitoria, Mayer-Eymar, Palceontograpliica, vol. xxx, p. 76, 



pi. xxiii, fig. (5, 1883. 

 T. Phnraonica, Cossmaiiu, Bull. Inst. Egyptien, 1901, p. 181, pi. ii, 



figs. 1, 2; Beadnell, Topogr. Geol. Fayum, Egypt, 1905, 



pp. 34, 35 ; Oppenheim, Paloeontographica, vol. xxx, pt. iii, 



■fasc. 2, p. 237, pi. xxiii, fig. 10, 1906. 

 Remarks. — This shell was originally recognized from Egypt by 

 Mayer-Eymar as Archiac's T. angulata of India, but according to 

 M. Cossmanu certain difterences exist which demanded their separation, 

 hence his introduction of T. Pharaonica for the Egyptian fossil. 

 Previously, however, Mayer-Eymar described 2\ transitoria from 

 the Upper Mokattam deposits of the island (Geziret el Qorn) on 

 Birket el Qurun in the Eayum, which certainly appears to be 

 Cossmann's T. Pharaonica, but exhibiting a spirally granulate 

 sculpture, much more clearly preserved than is generally the case 

 with oi'dinary Eayum fossils, otherwise the ornamentation is quite 

 similar although much more obscure, the granulations having been 

 smoothed down, or sometimes entirely removed by erosive agencies. 

 The mere fact that Mayer-Eymar's figure shows a slightly more 

 slender form of this species than usually obtains, forms no real 

 distinction, as much variation is observable among a number of 

 examples. Strange to say, Dr. Oppenheim admits T. transitoria 

 iu his synonymy, and yet adopts 2\ Pharaonica for the shell, a 

 name established some eighteen years later. There is no alternative, 

 therefore, but to recognize Mayer-Eymar's name of 1883. Two 

 specimens are now figured, one large form from the Qasr el Saglia 

 deposits, and an intermediate example which is of considerable 

 interest, having been found in the Jebel el Qatrani Series associated 

 with the estuarine mollusca previously referred to iu this address. 



These specimens were among some duplicates presented to the 

 British Museum (Natural History) by the Geological Survey of Egypt. 



