SUMMARY 01 THE INDIAN MAMMAL SURVEY. 811 



Subgen. I, — Rhinoceros. 



No. 334. unicornis, L. These two species may be dis- 



No. 335. soncfaicws, Desm. tinguished as follows : — 



Key to the species of Rhinoceros (Rhinoceros). 



A. — Fold ill front of the shoulder not con- 

 tinued over the back of neck ; skin 

 of sides bearing tubercles... ... 1. unicornis, \j. 



B. — Fold ill front of shoulder continued 

 over back of neck ; skin of sides 

 divided into small polygonal scales. 2. sondaicus, Desm. 



Distribution : — 



1. R. (R). unicornis, Lin- Tijpe locality .-—Assam. 



najus OtJier localities :— Assam; Nepal 



(B. M.). 



Type : — Unknown. (Type of steno- 

 cephalus, Gray, B. M. No. 722. e.). 



2. R. (R) sondaicus, Des- T^^e Zom% .-—Sumatra. (Diardand 



niarest. Duvaucal). 



Other localities .-—Cochin China ; 

 Malay Peninsula; Sumatra; Java; 

 Borneo (B. M.). 



Type :■ — Unknown. (Type of wasafe, 

 Gray, b'. M. No. 59. 8. 16. L). 



Subgen. II.— Dicerorhinus. 



In 1901 Thomas grudgingly ac- 

 No. 336. sumatrensis, Cl^v. cei^ted lasiotis, Sclater as a sub- 

 species of sumatrensis {r. Z. b. ii, 

 p. 154), solely on its larger size. Lydekker also keeps the two 

 forms separate, and Sclater in his Catalogue oi the Indian 

 ]Museum, Calcutta, distinguishes them as follows :— 



Key to the forms of Rhinoceros (Dicerorhinus). 

 ^.-Skull narrow ; tooth-roW short ... I. s. sumatrensis Cuv • 



B.-Skull broader ; tooth-row longer ... 2. s. lasiotts, feci. 



DiSTRIBU riON I — 



1. R. (D). sumatrensis sum- Type ^oca^i^^ .•— Suniatra. 



atrensis, C^ier. Other Wme. .--Pegu ; ^^la) 



Peninsula; Borneo (B. M.). 



ff^.^g .—Unknown. {Type ot mger, 

 GravfB'.M. No. 72.12.31.1.). 

 2.R.(D). sumatrensis las- Type locality :-C\nUagong. 

 V,-ok Sclater. Other lomhHes:-^orre. 



T//jje.-— B. M. No. 1. 1. — 1- 



