318 TEETIAET VEETEBEATA OP THE EATtTM. 



P. 10258. Portions of rostra, probably of this species. Presented hy Baron Nopcsa, 1905. 



P. 10243. Proximal portion o£ a rostrum. Presented by the Egyptian Government, 1904. 



C. 10205. Rostral tooth, probably of this species. 



From the Birket-el- Qurun series of the Zenglodon Valley, to the south-west of the lake, a 

 considerable number of large rostral teeth were collected by Mr. Beadnell, and are in the Geological 

 Museum, Cairo. These probably belong to Stromer's species Pristis ingens (torn. cit. p. 47). • 



Genus PROPRISTIS, Dames. 



[Sitzungsb. k. preuss. Akad. Wiss. Berlin, math.-phys. CI. 1883, p. 136.] 



In this genus the alveoli of the rostral teeth are not ossified, and their position is 

 only marked by shallow indentations in the rostral margin. 



Propristis schweinfurthi, Dames. 



1883. Propristis schweinfurthi, W. Dames, loc. cit. vol. i. p. 136j pi. iii. figs. 1 a-c, 2. 

 1905. „ „ E. Stronier, Beitr. Pal. u. Geol. Oesterreich-Ungarns n. d. Orients, 



vol. xviii. p. 53j pi. vi. figs. 17, 17 a, 17 b. 



Ti/pe Specimen. — A portion of a rostrum ; Eoyal Museum of Natural History, 

 Berlin. 



Remains of this species are not uncommon in the same beds as those from which 

 rostra of Pristis fajumensis are obtained. 



Form. & Loc. — Qasr-el-Sagha beds (Middle Eocene) : north of Birket-el-Qurun. 



C. 10206. A portion of a rostrum, closely resembling that figured by Stromer, torn. cit. pi. vi. fig. 17. 

 P. 10244. A similar portion of a rostrum. Presented hy the Egyptian Government, 1904. 



Genus EOPRISTIS, Stromer. 



[Beitr. Pal. u. Geol. Oesterreich-Ungarns u. d. Orients, vol. xviii. (1905) p. 52 (as a 



subgenus of Pristis).] 



This form seems to be as distinct from Pristis as is Pi'O^pristis, and on that account 

 it is here regarded as of generic rank. In this genus there is no trace of alveoli for 

 the tteth on the sides of the rostrum. 



