RUDIMENTARY ORGANS 



391 



well as for many other reasons. But it has only two appendages, 

 the flippers, which represent the fore limbs. No evidence of 

 hind limbs is to be found externally, but on dissection a rudi- 

 mentary pelvic girdle may be found, and in the Greenland 

 whale there are also rudimentary femurs and tibias. The 



Fig. 243. — The "Congo Snake," Amphiuma means. This animal is not a 

 reptile but an amphibian. It is found in the southern United States. Note 

 the rudimentary appendages. X1/3. 



Ophidia are classed as an order of Reptilia, but they have no 

 appendages. Yet in the case of the python there is a rudi- 

 ^mentary pelvis and also rudimentary appendages which appear 

 ^at the surface as horny points. Most lizards have two pairs of 



