18/2.] THE SECRETARY ON ADDITIONS TO THE MENAGERIE. 791 



Fig. 1. 



Right ear of Rhinoceros lasiotis. 



border the outer edge of the ear-conch (see fig. 1), and which are of 

 themselves sufficient to render the animal easily recognizable from 

 R. sumatrensis. Dr. J. Anderson, in his excellent description of ouv 

 Chittagong animal under the name of R. sumatrensis (antea, p. 130), 

 has specially commented on this peculiarity, but, not being aware 

 that he was dealing with a different species, was inclined to think 

 it might be individual. In R. sumatrensis (verus) (fig. 5, p. 793) 

 the ears are filled with short bristly hairs internally, but there is no 

 special elongated fringe on the outer edge. In R. lasiotis (fig. 3, 

 p. 792) the interior of the ear-conch is nearly naked. 



Our Sumatrau Rhinoceros, although an adult or rather aged 

 animal, was much smaller in bulk than the hairy-eared, and at least 

 6 inches less in height at the shoulder*. 



Another point of distinction between the two animals is the longer 

 tail of R. sumatrensis, which is only covered by short black straggling 

 bristles. In R. lasiotis the tail is shorter and tufted, terminating 

 in long brown hairs. 



The distance between the ears is much greater in R. lasiotis than in 

 R. sumatrensis, as will be seen by the accompanying drawings (figs. 

 2 and 4, pp. 792, 793) ; and there can be no doubt that the skulls 

 of the two species, when they can be compared, will exhibit corre- 

 sponding differences. 



The skin of R. lasiotis is smoother and paler in colour; the hairs are 

 longer and finer and of a rufesceut hue, giving the animal a general 

 colouring of lightish brown. In R. sumatrensis the skin is much 

 darker and the hairs are short and bristly. 



* Mr. Bartlett's measurements of our five Rhinoceroses (August L'4, 1872) 

 are as follow : — 



ft. in. 



1. R. unicornis <? 5 4") 



.".. R. sumatrensis 2 3 8 > height at shoulder. 



4. R. lasiotis 9 4 4 



5. R.bicornis <J 4 ('. J 



