326 DR. A. aiJNTHEE OK TWO LARGE EXTIKCT LIZARDS. 



crest is strongly developed, and does not extend beyond the proxi- 

 mal third of the length of the bone. The transverse diameter of 

 the distal extremity is nearly rectangular to that of the proximal. 

 The whole of this part of the bone is much dilated, particularly by 

 a broad trenchant crest running along the radial border of the 

 bone. Of the two condyles the radial one is much the more pro- 

 minent one and projects towards the anterior side of the bone. 

 In all these particulars G. newtonii resembles G. verus, all the 

 ridges and prominences being, however, much more developed. 



G. verus. G. newtonii. 



millims. millims. 



Length of the humerus • 22^ 25 



Least width of the shaft 2 3 



Transverse diameter of proximal end 5i 9 



Transverse diameter of distal end 6| 10 



Fig. 5. 



A. Inferior surface of the pelvis of Gecko verus. B. The outer aspect of the 

 right OS innoniinatum of the same animal. C. Lower surface of the right 

 half of the pelvis of G. newtonii, and D, its exterior surface. All the figures 

 are of natural size. 



The pelvis an A femur Q.ve so similar to those of G. verus i\\2it 

 the accompanying figures and statements of measurements will 



suffice to give a perfect idea of those bones. 



G. verus. G. newtonii. 



millims. millims. 



Length of the OS ilium (from acetabulum)... 11 13 



Grreatest width of OS ilium (from acetabulum) 4 5| 



Length of os pubis (from acetabulum) 11 (injured) 



Width of OS pubis at its base 3 5| 



Length of os ischii (from acetabulum) 6| 11 



J' 



