20Q 



AMPHIBIA 



in which, as in frogs and toads, the male takes forcible posses- 

 sion of the female — she being secured by the first comer, with- 

 out much chance of his being dislodged by any rival, so tight is 

 his hold, no ornaments ever exist. Although in Tailless 

 Batrachians, in which amplexus is universal, there are many 

 secondary sexual differences, these are never capable of being 

 interpreted as in the nature of ornaments. 



b 





*0* 



Fig. 17. — Development of Crested Newt : a, b, stages within the egg ; c, d, 

 e, f, stages of the larva magnified. 



The different types of eggs vary to the same extent as in 

 the Tailless Batrachians, but they are never so completely 

 abandoned as is the case in many frogs. In the forms which 

 take the least care of their progeny, as in newts and the 

 axolotl, the eggs are deposited, one by one or in small 

 groups, attached to stones or water weeds, the female often 



