27( ) 



i)i':(;i;\Ki!ATio\ ix limds of lizards. 



liiiKl-liinljs from 14 to Ki mm. The usual lacorlilian carpal and 

 tarsal bones occur, as well as the normal number of metacarpals 

 and metatarsals, and the phalangeal formula is that characteristic 

 of reptiles, namely, 2, 3, 4, 5, 3, each digit terminating in a well- 

 defined claw (Fig. 1). Certain variations in the number of 

 phalanges have been met with, but not more than may well be 

 regarded as within the limits of fluctuating variability, without 

 any suggestion of orderly degeneration. 



Fic;. 1.- — Fore-linili (if ('hamae-<(ii(rii opiica. 

 r. radius, k. ulna. I to V, digits. 



ClIAMAESAURA AXGUINA. 



The limbs here present a very different outward appearance 

 from those of C. aenca. They are smaller in i)roportion to the 

 body, the fore-limbs being about G mm. in length and the hind- 

 limbs about 8 mm. They are Hattened and styliform, with but 

 a slight bend at the elbow and knee joints. Sometimes a hint is 

 afforded of a separation into two digits, but usually the limb 

 terminates in a single minute claw. 



Dissection reveals a marked reduction in both fore- and hind- 

 limbs, but with considerable individual variation, a contrast to the 

 general fixity found to characterise the previous species (Figs. 2 

 and 3). 



