INTRODUCTION. 



As the present Part does not call for any addition to the intro- 

 ductory observations published in the two preceding Parts, I have 

 only to again express my thanks to the Director of the Geological 

 Survey of India for the loan of woodcuts ; and to offer the same 

 to Professors A. Gaudry, 0. C. Marsh, and E. D. Cope, for per- 

 mission to reproduce some of the beautiful woodcuts illustrating 

 their respective works. My obligations to Mr. "W. Davies are as 

 great in this as in the preceding Parts. 



The Gualteris Collection, consisting of specimens from the Pleis- 

 tocene of Italy, and originally belonging to Cardinal Gualteris, was 

 purchased previous to 1836. 



The Sharp Collection was purchased in 1876 from Mr. S. Sharp, 

 of Dallington, Northampton. 



RICHARD LYDEKKER. 



Harpenden, 

 5th 'April, 1886. 



