URODELA OR SALAMANDERS, ETC. 



24;) 



Of the Siredons which the Professor was keeping in 

 vessels of water, he found that "two specimens, most 



FIG. 28'J. 



Amblystoma mavortium, Baird. 



favored in regard to light and warmth, passed apparently 

 through the entire transformation in about twenty days. 

 Those that commenced at the same time, but were less 

 favorably situated, required at least twice that time for its 

 completion." 



Siredons are abundant in Lake Como, a small sheet of 

 water near the Union Pacific Railroad, in Wyoming. 



SUB-SECTIOX IV. 

 THE ORDER OF APODA OR SNAKE-LIKE BATRACHIANS. 



THE batrachians of this order are destitute of limbs, 

 and move like serpents. They are known under the 

 name of Blind-worms or Csecilians, a name derived from 

 the Latin word ccecus, meaning blind, and given to these 

 animals on account of their exceedingly minute eyes ; so 

 minute that some of the species seem entirely wanting in 

 these organs. The Civilians vary from one to three feet 



