INTRODUCTION. 
VII 
Capt. Sir Edward Belcher , R.N . C.B. , as the types of the 
species described in the “ Zoology of the Voyage of 
H.M.S. Sulphur,” now in the course of publication. 
Thomas Bell , Esq ., as the types of species described by 
that author ; and as authentic specimens, from which 
I have described certain species of Bats. 
George Bennett , Esq. 9 as being the original specimens 
from which the species have been described. 
William Burchell, LL.D., as the types of the species de- 
scribed in Dr. Burchell’s “ Travels in South Africa,” 
and of those described from this collection by Colonel 
Hamilton Smith, in the Additions to Griffith’s Trans- 
lation of Cuvier’s “ Animal Kingdom.” 
Sir William Burnett and Captain Fitrzoy , R.N, , as 
the types of the species collected during Capt. Fitz- 
roy’s voyage, and described in Mr. Darwin’s 
“ Zoology of the Voyage of H.M.S. Beagle.” 
Capt. Clapperton , R.N. , and Colonel Denham , as the 
types of the species described by Messrs. Children 
and Vigors in the Appendix to their “ Travels in 
Central Africa.” 
M. Adolphe Delessert , as the type of the species described 
in the <f Magazin de Zoologie.” 
W alter Elliot , 1 Esq., as authentic specimens of the species 
described in his papers on the animals of Madras in 
the a Madras Journal of Science,” and of those 
which I described from his collection in the “ Ma- 
gazine of Natural History.” 
Capt. George Grey , as the types of the species de- 
scribed from his collection, by Mr. Gould and 
myself. 
General Thomas Hardwicke , as the types of the species 
described by him in the u Transactions of the Lin- 
