( I'Jl ) 



Jackson (I.e. p 4(i3) ennmeratea 8 dorsal, 4 sacral, and :^1 candal verteljrae ; 

 whilst I distinguish 10 dorsal and 24 candal vertebrae. Of tiie latter, however, 

 only 22 are preserved now, the very last, probably two, being lost. 



The bones of the fore-limb show no particular modification of the type 

 previously described in T. eh'plianfopiis, ricliia, and cphippiiim \ slight differences 

 in dimensions may be seen from the following comparative measurements : — 



All the bones of the cai-piis are preserved and in their natural position. 

 Coalescence, more or less comi)leto, obtains between some of them ; thus no joint, 

 only a suture, exists between the cuneiform and the succeeding carpal belonging to 

 the tiftli tue. The scaphoid and intermedium are partially anchylosed, wliilst the 

 two radiai ossicles of the distal (third) series are entirely coalesced. All the bones 

 of the distal series show on their lower surface large e.xostotic excrescence, being 

 the principal points of contact with the ground during locomotion. Each digit is 

 comjwsed of three phalanges. 



In the pelcis (I'l. XXI), as in all Galapagos tortoises, all the sutures are present, 

 and growth seems to have been still proceeding in their vicinity ; bnt the os ilii 

 and the vertical diameter of the pelvis are much shorter than in T. elepliantojius, and 

 shorter than in T. ckiiia and T. cphippium. The symphysis of the ossa pubis and 

 ossa ischii terminates in a broad, rather shallow notch. 



