PREFACE. 
Tux object of the present Catalogue is to give a list of all the genera 
and species of the Monkeys, Lemurs; Colugoes, and Frugivorous Bats 
in the British-Museum Collection, with references to other species 
described from other collections. The letters B.M. after a specific 
name denote the species that are now contained in the Collection ; 
and the absence of those letters indicates the species which are desi- 
derata, and therefore desirable to be procured for the Collection. 
The woodcuts are the same as were prepared to illustrate papers 
published in the ‘ Proceedings of the Zoological Society, which are 
kindly lent by the Council of that Society for the purpose. 
These sheets were printed in 1867, when the printing was inter- 
rupted by my ill health, and have been detained in the hope that I 
should be able to revise the remainder of the manuscript, which I 
still hope to print in a separate part at a future time. 
JOHN EDWARD GRAY. 
- British Museum, 
December J, 1870. 
