RHIXOCEROTID^:. 131 



Antiqua Sivalensis,' pi. Ixxiii. fig. 2, and in ' Falconer's 

 Palaeontological Memoirs,' vol. i. pi. xiv. fig. 1. 



Presented by Dr. Hugh Falconer. 



39674. The first left upper true molar, in an early condition of 

 wear ; from the Siwalik Hills. The buttress is broken 

 away. Gautley Collection. Presented, 1842. 



41935. The third left upper true molar, wanting the outer half ; 

 (Fiy.) from a cave near Chung-king-foo, Sechuan, China. This 



specimen is described and figured by Owen in the Quart. 

 Journ. Geol. Soc. vol. xxvi.p.424, pi. xxix. figs. 1,2 (1870), 

 under the name of R. sinensis (of which it is the type) ; 

 it is also figured by Koken (as R. sivalensis) in the Pal. 

 Abhand. vol. iii. pt. 2, pi. vi. fig. 4, together with a per- 

 fect specimen. Except in being somewhat smaller, it 

 presents no characters by which it can be distinguished 

 from m. 3 of No. 39647. This smaller size renders it very 

 difficult to distinguish this tooth from m. 3 of R. sondaicus ; 

 but the form of pm. 4, and the other mammals with which 

 the Chinese specimens are associated, indicate that their 

 affinity is with the Siwalik form. A specimen figured by 

 the present writer in the ' Palaeontologia Indica,' ser. 10, 

 vol. ii. pi. v. fig. 4, agrees more nearly in size with the 

 present example. 



Purchased from R. Swinhoe, Esq., 1870. 



41936. The hinder half of the much-worn m. 1 ; from the same 



locality. Noticed by Owen, op. cit. p. 425. This specimen 

 agrees precisely in form with m- 1 of No. 39626. 



Purchased from R. Swinhoe, Esq., 1870. 



41936 a. The outer lamina of a fourth left upper premolar ; from 

 (Fig.) the same locality. Figured by Owen, op. cit. pi. xxix. 

 fig. 3, as R. sinensis. A similar tooth is figured by Koken, 

 op. cit. pi. vi. fig. 1. under the same name ; but apparently 

 presents no characters by which it can be distinguished 

 from an upper premolar of R. sivalensis figured by the 

 present writer in the ' Palaeontologia Indica,' ser. 10, vol ii. 

 pi. v. fig. 6. The hinder costa is much more developed than 

 in R. sondaicus. Purchased from R. Swinhoe, Esq., 1870. 



41941-4. Five lower cheek-teeth ; from the same locality. Noticed 

 by Owen, op. cit. 



Purchased from R. Swinhoe, Esq., 1870. 



