158 UNGULATA. 



Pliocene of the Siwalik Hills, India. This specimen is 

 noticed by the writer in the ' Palaeontologia Indica ' (Mem. 

 Geol. Surv. Ind.), ser. 10, vol. iii. p. 4 ; it apparently 

 belongs to the aceratherine section, and is certainly distinct 

 from R. perimensis, and apparently from R. blanfordi. 



Presented by C. Falconer, Esq., 1867. 



Rhinoceros, sp. b. 



Hab. Tibet. The following specimens were obtained from the 

 Upper Pliocene (?) of Hundes, in Western Tibet 1 , and were brought 

 by traders over the Niti pass : they are not specifically determin- 

 able 2 , and belong to the Cautley Collection. Presented, 1842. 



39653 a. Fragment of the right zygoma. 



39653. The glenoidal portion of the right scapula. Figured by 

 (Fig.) Falconer and Cautley in the ' Fauna Antiqua Sivalensis,' 

 pi. Ixxvi. fig. 6. 



39649. Fragment of the left humerus. Figured, op. cit. fig. 1. 

 (Fig.} 



39650. The proximal half of the left radius. Figured, op. cit. fig. 3. 



39652. The left scaphoid. ' Figured, op. cit. fig. 2. 



(Fig.} 



39656-7. The imperfect distal extremity of the left femur, and the 

 (Fig.) proximal end of the tibia. Figured, op. cit. figs. 10, 4. 



39654-5. A first and second phalangeal of a middle digit. Figured, 

 (Fig.) op. cit. figs. 7, 8. 



Genus HYRACODON, Leidy 3 . 

 Dentition: I. ?, C. J, Pm. *, M. ? 



3 1 4 3 



On account of the presence of the full typical number of incisors, 

 this genus is referred by Cope 4 to a separate family Hyracodontidce. 



1 See Lydekker, Rec. Geol. Surv. Ind. vol. xiv. pp. 178-184 (1881). These 

 beds are provisionally classed in this notice as Pleistocene, but the writer now 

 thinks they are more probably of Upper Pliocene age. 



8 It has been suggested in a paper by the present writer on Persian Mammals 

 (Quart. Journ. Geol. Soc. vol. xlii. [1886]) that this form may be R. blanfordi. 



3 Proc. Ac. Nat. Sci. Philad. vol. viii. p. 91 (1856 ; vol. dated 1857). 



4 See Proc. Amer. Phil. Soc. vol. xix, pp. 379, 393 (1881). 



