46 



BREEDING HABITS OF AMPHIBIA 



TRITURUS PYRRHOGASTER 



(From A. Ichikawa 1937: Jour. Fac. Sci. , Hokkaido 

 Imp. Univ., Ser. VI, Vol. VI, No. 1) 



FEMALE 



TRITURUS TOROSUS 



Above: adult T. torosus female. Middle: adult T. torosus 

 male in breeding condition. The extreme glandular devel- 

 opment during the mating season leaves the skin of Triturus 

 males in a smooth, transparent condition, almost jelly-like 

 in consistency. The color of the skin during this period is 

 characteristically quite pale in T. torosus, although it may 

 be sometimes considerably darker than in the specimen shown 

 here. Below: male of T. sierrae in breeding condition. 



(From Twitty ly42: Copeia, #2) 



TRITURUS GRANULOSUS 



Above: adult male of T. granulosus from Mendocino County 

 in breeding condition. Extreme development of the toil fin 

 is characteristic of the breeding males in this species. Adult 

 pigmentation is more variable in this than in other species of 

 Californian Triturus, and may be either somewhat darker or 

 considerably lighter than in tlie specimen shown here. The 

 sides of breeding males generally exhibit a characteristic 

 steely-blue coloration (which is, however, sometimes approx- 

 imated also in torosus males). Particularly during terrestrial 

 periods the back and sides of both sexes are often quite dark, 

 almost black, and the belly a yellowish or pinkish orange. In 

 general the granulosus of Santa Clara County are less darkly 

 pigmented than those farther north (sec Bishop, 1941). Middle 

 and below: lateral and ventral views of an adult T. rivularis 

 female. The band across the cloaca is very characteristic, 

 but not invariable, and may appear also in lesser degree of 

 development in other Californian species of Triturus. 



(From Twitty 1942: Copeia, #2) 



