BISTKIEUTIOF OF OPHIDIANS. 
229 
Island of Sumatra is tlie only one of all tlie isles of Ma- 
layan Asia that produces the Elephant ; the Indian Ta- 
pir'^ is also found in Borneo ; and these animals at the 
same time inhabit the Asiatic Continent. The Great Stag 
of Sumatra, Cervus hippelaphus, Cuv., is found in Borneo, 
and probably also in the Peninsula of Malacca. The Hy- 
iobates syndactylus and Semnopithecus melalophos, from 
which the S. flavimanus does not appear to differ, have 
yet only been found in Sumatra ; but it is asserted that 
the Lar of Baffles, Hylobates Bafflesii, to which it is 
necessary to refer the Ilylob. agilis and H. variegatus, in- 
habits also the isle of Celebes. The Gymnurus, a great 
terrestrial insectivorous animal, and the great black Cha- 
mois, Antilope Sumatrensis, have never yet been seen ex- 
cept in Sumatra ; but the curious Gnawer, described by 
M. Temminck under the name of Nyctocleptus, and the 
Long-tailed Porcupine, inhabit also Malacca. It appears 
that the island of Sumatra has a peculiar species of Bhi- 
noceros, if perhaps the Bhinoceros of Borneo does not 
belong to the same species. Several other animals are 
found at the same time in Sumatra and Borneo, which have 
not been observed in the other Malayasian islands ; such 
are the Orang-outan, the Semnopithecus nasicus and S. 
cristatus, the Innuus nemestrinus, the Felis macrocelis, 
the Ursus Malayanus, which also inhabits Celebes ; besides 
several squirrels, belonging partly to new species, some 
few of which are found in Malacca, Siam, and China, but 
have not yet been found in Java. The isle of Sumatra 
has several Chelonians in common with Borneo ; but the 
Saurians and Batrachians belong, for the most part, to spe- 
cies also inhabiting Java. In glancing at the picture 
which we have sketched of the geographic distribution of 
Ophidians, we see that the serpents of Sumatra also inhabit 
Java, almost without exception, and that a good number 
of them are equally found in India and Bengal. The Tri- 
gonocephalus Wagleri, on the contrary, appears to be found 
^ It should be understood, that the observations on the absence of 
certain animals, in certain regions, cannot always be regarded as positive. 
We can only judge from what we know ; and new discoveries may doubt- 
less produce modifications of these assertions. 
