Page:The naturalist on the River Amazons 1863 v1.djvu/369

 the Amazons, so that the great contrast in the forest-clothing of the two rivers cannot arise from this cause.

I did not stay long enough at Barra to make a large collection of the animal productions of the neighbourhood. I obtained one species of monkey; not more than a dozen birds, and about 300 species of insects. Judging from these materials, the fauna appears to have much in common with that of the sea-coast of Guiana; but, at the same time, it contains a considerable number of species not hitherto found in Guiana, or in any other part of South America. The resemblance between the eastern shore of the Rio Negro and the distant coast of Guiana, in this respect, appears to be greater than that between the Rio Negro and the banks of the Upper Amazons.

The species of monkey mentioned above was rather