M IMJiODLXTIuX. 



Tlie muiilicr of species of Chcloiiiuiis, regarded us well ostablishod, 

 amounts to 201. The Collection contains representatives of 170, 

 tile number of specimens being 1665. Gray's ' Hand-list,' issued in 

 1 873, records 1U7 species and 1371 specimens. During the prepa- 

 ration of this Catalogue the series of skeletons has been greatly 

 enlarged. 



'2'3 species of Emydosaurians appear to be well established, 

 18 of which are represented in the Collection by 230 specimens. 

 JSince the publication of the 'Hand-list,' in which 23 species and 

 304 specimens are enumerated, a number of defective or duplicate 

 specimens have been eliminated; this accounts for the decrease 

 in the number of specimens, as well as the fact that, through over- 

 sight, the same specimens were occasionally put down in the 

 'Hand-list' under different specific headings, and extracted skulls 

 or other detached portions of one and the same individual Avere 

 reckoned as so many specimens. 



As in the other volumes of the Catalogues, the affixes to the names 

 of Donors »S:c., in the third column of the list of specimens, may be 

 explained as follows: — "[P.J" signifies " Presented by " ; " [C] " 

 = " Collected by"; "[E.]" = " Obtained in exchange." 



G. A. BOULENGEK. 



Department of Zoology, 

 December 17, 188S. 



