196 THE MALAYAN PAPILIONIDE AS 
importance with extensive groups of islands many 
times as large as itself; and standing in the very centre 
of the archipelago, surrounded on every side with islets 
connecting it with the larger groups, and which seem 
to afford the greatest facilities for the migration and 
intercommunication of their respective productions, it 
yet stands out conspicuous with a character of its own 
in every department of nature, and presents peculiari- 
ties which are, I believe, without a parallel in any 
similar locality on the globe. 
Briefly to summarize these peculiarities, Celebes 
possesses three genera of mammals (out of the very 
small number which inhabit it) which are of singular 
and isolated forms, viz., Cynopithecus, a tailless Ape 
allied to the Baboons ; Anoa, a straight-horned Ante- 
lope of obscure affinities, but quite unlike anything 
else in the whole archipelago or in India: and Babi- 
rusa, an altogether abnormal wild Pig: With a rather 
limited bird population, Celebes has an immense pre- 
ponderance of species confined to it, and has also six 
remarkable genera (Meropogon, Ceycopsis, Strepto- 
citta, HEnodes, Scissirostrum, and Megacephalon) en- 
tirely restricted to its narrow limits, as well as two 
others (Prioniturus and Basilornis) which only range 
to a single island beyond it. 
Mr. Smith’s elaborate tables of the distribution of 
Malayan Hymenoptera (see “ Proc. Linn. Soc.” Zool. 
vol. vii.) show that out of the large number of 301 
species collected in Celebes, 190 (or nearly two-thirds) 
are absolutely restricted to it, although Borneo on one 
