FOSSIL HYRACOIUS FROM THE FAYl^M, 847 



exter-aiiteviorly. The inner to posterioi' surface of the protocone 

 is smoothly rounded, while the outer-anterior side of the hypo- 

 cone has a feeble ridge. The anterior and inner basal cingula 

 are well develoj)ed, but not continuous to each other. 



Text-figure 5, 



Titanoliyrax ultimus. Crown view of left upper C ; natural size ; M. 9479 ; 

 paratype. 



The upper C is moderately worn (text-fig. 5). It is ovoid in 

 palatal view. The worn area has an acute prolongation, which 

 stretches backwards. The inner cingulura is well developed, ex- 

 tending from the anterior end to the posterior end of the tooth. 



The teeth above described measure as follows (in mm.) : — 



Length. Width. 



Up. C 16-5 12-5 



P'^- 32 34-5 



M^ 41 46 



M2 39 28 



(2) TiTANOHTRAx scHLOssERi, nom. n. 



21egcdohyrax eoccenus Schlosser, Beitr. z. Pal. u. Geol. Osterreich- 

 TJngarns u. d. Orients, Bd. xxiv. 1911, p. 105 {non Andrews, 

 1903), pi. xi. (iii.) fig. 7. 



Judging from Schlosser's description and figure, there is no 

 doubt that his specimens of his '' 3Iegaloh7/r ax eoaremcs" belong 

 really to his " Megcdohyrax" viz. Titanohijracc, though Andrews's 

 Megcdohyrcuv eoccenus does not. So that Schlosser's specimens 

 want a new name. 



(3) TiTANOHYRAX PALiEOTHERIOIDES (Schlosser). 



Megcdohyrax pcdceotherioides Schlosser, Zool. Anz., Bd. xxxv. 

 1910, p. 502 ; Schlosser, Beitr. z. Pal. u. Geol. Osterreich-Ungarns 

 u. d. Orients, Bd. xxiv. 1911, p. 106, pi. xi. (iii.) fig. 1, pi. xii. 

 (iv.) fig. 1. 



(4) TiTANOHYRAX ANDREWSI, Sp. n. 



Jlegalohyrccx minor Andrews, Brit. Mus. Cat. Tert. Vert. 

 Fayum, Egypt, 1906, p. 97 {peers; non Andrews, 1904), pi. vii. 

 figs. 2 & 3 {non fig. 1) ; Schlosser, Beitr. z. Pal. u. Geol. Osterreich- 

 Ungarns u. d. Orients, Bd, xxiv. 1911, p. 105. 



