436 ZOOLOGICAL GEOGRAPHY. [pakt hi. 



In Bupre.slieUe, the jJiiiK-ipal Austro-Malay genus, Samhus, is 

 found here ; while Sponsor, a genus 8 species of wliioh inhabit 

 Mauritius, has one species here and one in New Guinea. In 

 Longicorns there are four peculiar genera, Comusia, Pytholia, 

 Bitylc, and Ombrosaga ; but the most important features are the 

 occurrence of the otherwise purely Indo-Malayan genera Agc- 

 lastci, Nydimene, and As'athcs ; and of the purely Austro- 

 Malayan Arrlicnotm, Trysimia, Xcnolca, ArnM/pnora, Diallus, 

 and yEgocidiius. The remaining genera range over both portions 

 of the archipelago. In the extensive family of Curculionidfie 

 we can only notice the elegant genus, C'clebia, allied to EuiJho- 

 liis, which, owing to its abundance and beauty, is a conspicuous 

 feature in the entomology of the island. 



Origin of the fauna of Celebes. — We have now to consider, 

 briefly, what past changes of physical geography are indicated 

 by the curious assemblage of facts here adduced. We have 

 evidently, in Celebes, a remnant of an exceedingly ancient land, 

 which has undergone many and varied revolutions ; and the 

 stock of ancient forms which it contains must be taken account 

 of, when we speculate on the causes that have so curiously 

 limited ]nore recent immigrations. CToiug back to the arrival 

 of those genera which are represented in Celebes by peculiar 

 species, and taking first the Au^^tro- Malay genera, we find 

 among them such groups as Zonceaas (s.g.), Phlugcenas, Leueo- 

 trcron (s.g), and Turaccena, which are not found in thelVIoluccas 

 at all ; and Myzomcla, found in Timor and Banda, but not in 

 Ceram or liouvu, which are nearest to Celebes. This, combined 

 with the curious absence of so many of the connnonest JMoluccau 

 genera, leads to the conclusion that the Austro-JMalay immigra- 

 tion took place by wa}^ of Timor and the southern part of New 

 Guinea. It wdll be remembered, that to account for the Indo- 

 Malayan forms in New Guinea, we suggested an extension of 

 that country in a westerly direction just north of Timor. Now 

 tills is exactly what we require, to account for the stocking 

 of Celebes with the Australian forms it possesses. At this time 

 Borneo did not approach so near, and it was at a somewhat later 

 period that the last great Indo-Malay migration set in; Imt 



