242 COPE. 



pubis. It is homologized by Furbringer with the iliopectineal 

 bone of the snakes. 



GENERAL CONCLUSIONS. 



One conclusion is obvious, and this is, that degeneracy of the 

 scapular and pelvic arches follows degeneracy and loss of limbs, 

 sooner or later. More special conclusions may be expressed as 

 follows : — 



I. Anterior limbs have disappeared more generally than the 

 posterior in the Diploglossa. 



II. The limbs incline to degenerate and disappear more 

 nQ3x\y pari passu in the Scincidse. 



III. The anterior limbs have a tendency to persist longer in 

 the Teidae and Amphisbaenidae. Future research may not sus- 

 tain this proposition. 



IV. The degeneracy in the scapular arch is delayed long 

 after the degeneracy and loss of the anterior limbs. 



V. Degeneracy of the pelvic arch precedes the loss of the 

 pelvic limb. 



VI. The order of degeneracy of the elements of the scapular 

 arch is : (i) limb ; (2) interclavicle (generally) ; (3) costal attach- 

 ment ; (4) sternum. 



VII. The order of disappearance of parts in the pelvis is : (i) 

 pubis and ischium together (generally ; cf. Amphisbaena) ; (2) 

 limb ; (3) ilium. 



