RHJNOCEROTID^E. 155 



28583 b. The inner half of a smaller first right upper true molar ; 

 from China. This specimen agrees with m. 1 of a jaw 

 figured by the present writer, op. cit. pi. ii. fig. 4. 



Presented by D. Hanburg, Esq., 1853. 



28583 C. A left lower cheek-tooth ; from China. 



Presented by D. Hanbury, Esq., 1853. 



Rhinoceros perimensis, Falconer and Cautley l . 



Syn. Aceratherium perimense, Lydekker 2 . 

 Rhinoceros iravadicus, Lydekker 3 . 

 Rhinoceros planidens, Lydekker 4 . 



This species is of large size ; the cranium is taller and shorter 

 than in R. incisivus, with short pointed nasals. In the upper cheek- 

 teeth the true molars (fig. 19) have a strong " buttress," a large 

 " crochet," small " antecrochet," and an incomplete inner cingulum ; 

 in the premolars this cingulum is complete, and (as in the true molars) 

 is frequently crenulated. 



Hob. India (Perim Island, Punjab, and Siwalik Hills) and Burma. 



M. 2725. Fragment of the right maxilla, containing pm. 2 and 

 pm. 3, in a broken condition ; from the Pliocene Siwaliks 

 of Perim Island, Gulf of Cambay, India. The teeth agree 

 precisely with those of the specimen figured by the pre- 

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

 pi. ii. Transferred from the Old Indian Museum, 1880. 



18788. Anterior half of the first left upper true molar ; from Perim 

 Island. This tooth also agrees exactly with m- 1 of the 

 figure cited. Presented by Mrs. Leach. 1845. 



M. 2958. Cast of the second left upper true molar. The original 

 (fig. 19) is from the Pliocene Siwaliks of Burma, and is 

 preserved in the Indian Museum, Calcutta (No. C. 74 5 ) ; 

 it is figured by the present writer in the ' PalaBontologia 

 Indica,' ser. 10, vol. i. pi. v. fig. 1 (under the name of 

 R. iravadicus), and vol. iii. pi. i. fig. 5. 



Made in the Museum, 1886. 



1 Fauna Antiqua Sivalensis, pt. 7, pi. Ixxv. (1847). 



2 Palseontologia Indica (Mem. Geol. Sury. Ind.), ser. 10, vol. i. p. 51 (1876). 



3 Ibid. p. 36. * Ibid. p. 41. 



5 See Lydekker, Cat. Siwalik Vert. Indian Museum, Calcutta, pt. i. p. 66 

 (1885). 



