EXPLANATOEY NOTICE. 



The printing of this Catalogue was commenced in 1865, shortly 

 after the receipt of Mr. W. Theobald's MSS. ; but in consequence of 

 the difficulties experienced in correcting proofs, and also in conse- 

 quence of insufficient instructions regarding the execution of the 

 plates having been at first issued, a delay of nearly three years has 

 occurred in its publication. This delay is greatly to be regretted, 

 because many new species and genera of reptiles are described in this 

 paper. The dates of publication have accordingly to be rectified. 

 The Catalogue has been printed by order of the Council, and is now 

 issued as an extra number of the Journal. 



The Nat, Hist. Secretary^ 



Asiatic Society^ Bengal, 



Calcutta, June, 1868. 



