1862.] A Memoir on the living Asiatic Species of Rhinoceros. 159 



— " I have, myself, shot three Ehinoceroses ; one single-horned, on the 

 borders of Asam [indicus, of course] ; and the other two, not far 

 from Bassein in the Yomatoung range separating Pegu from Arakan. 

 I saw the skin of the one whose skull you have got [that of Eh. 

 sondaictjs (of the narrow type), shot by my friend Dr. Hook of 

 Tavoy near Tavoy Point, where there is a small isolated colony of 

 the species], and it was exactly, in every respect, like the one I shot 

 in Asam. The two-horned fellows I shot had smooth skins, as stated 

 by Mason ; they were, however, very thick, and there were slight 

 rumples or folds about the neck and shoulders, I remember, but 

 nothing to be compared in size to the mailed armour of the single- 

 horned species." In Burma, people distinguish only a one-horned 

 kind and a two-horned kind ; and though the skull from Tavoy 

 Point, referred to, is very nearly adult and of fair size, Col. Fytche 

 thought it to be that of a small and immature animal, as compared 

 with the huge ustdicus that he killed in Asam. I must frankly con- 

 fess that I have only quite recently discriminated the two one-horned 

 species ; fancying, as a matter of course, that the numerous skulls 

 of single-horned Ehinoceroses in the Society's museum, from the 

 Bengal Sundarbans, &c, especially of the broad-faced type, were 

 necessarily of the hitherto reputed sole Indian species. F. Cuvier's 

 figure of Eh. sondaicus is that of a very young animal ; and, with 

 those of Hoi'sfield and S. Miiller, conveys the appearance of a more 

 evenly tessellated hide than I remember to have seen in any living 

 continental example. I have, however, been comparing our stuffed 

 Sundarban example (less than half-grown) with the figure of adult 

 Eh. ustdicus in the Menagerie du Museum d'Hist. Nat., and with 

 the figures of Eh. sondaicus by S, Miiller and others ; and perceive 

 that it must be referred to the latter and not to the former. The 

 tubercles of the hide are much smaller than in lndicus ; and a 

 marked difference between the two species, as represented, consists 

 in the great skin-fold at the setting on of the head of ustdicus, 

 which is at most but indicated in sondaicus. In skulls of adults, 

 however those of both species may vary in width, and especially in 

 breadth anterior to the orbits, the following distinctions are tren- 

 chant. Length of skull, from middle of occiput to tip of united nasals 

 (measured by callipers), — in indicus 2 ft. (| in. more or less), — in 

 sondaicus, If ft. at most. Height of condyle of lower jaw, — in 



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