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COMPENDIUM OF GEOGRAPHY AND TRAVEL 
is a Moluccan form, and Obba and Ohbinct, which occur in 
North Celebes, are purely Philippine. No peculiar genus 
has hitherto been discovered, but the material is as yet 
hardly sufficient to form deductions, and taking account 
the babirusa (Sus babirusa). 
of both mammalia and birds, of which two groups alone 
we possess sufficiently detailed information, we cannot 
doubt the great antiquity and extreme isolation of this 
island from the rest of the archipelago. The two re¬ 
markable mammals—the ape-baboon (Cynopithecus) and 
the four-tusked pig (Babirusa), as well as a curious bee- 
