rREEAOE. 



The collection of Tortoises and Crocodiles in tho British Muscuai 

 was that part of the herpetological series to which the late Dr. Gray 

 paid special and unremitted attention. Besides numerous papers 

 which appeared in various periodicals, ho prepared the following 

 Catalogues for publication by the Trustees : — 



1. Catalogue of Tortoises, Crocodiles, and Amphisbicnians. 1844. 



12° (pages 80). 



2. Catalogue of Shield Reptiles. Part I. Testudinata. 1855. 

 4" (pages 79, with 50 plates). Part II. Emydosaurians, 

 Ehynchocephalia, and Amphisbsenians. 1872. 4° (pages 41, 

 with woodcuts). 



3. Supplement to the Catalogue of Shield Eeptiles. Part I. 

 Testudinata, with figures of the skulls of 36 genera. 1870. 

 4" (pages X and 120). 



4. Appendix to the Catalogue of Shield lieptiles. Part I. Testu- 

 dinata. 1872. 4° (pages 28). 



5. Hand-List of the Specimens of Shield Reptiles. 1873. 8" 

 (pages iv and 124). 



The collections made during the Transit of Venus Expedition 

 and the opportune visits, in the year 1875, of British vessels to the 

 Galapagos Islands furnished unequalled materials for the thorough 

 examination of a group of Tortoises which previously had not been 

 well understood. This examination was undertaken by myself, and 

 the results were published by the Trustees in 



6. The Gigantic Laud-Tortoises (Living and Extinct). 1877. 



4" (pages iv and U6, with 54 plates). 



