PLATE 6 
Fig. 12. Larvae of Triturus torosus, Hyla regilla, and Bana aurora draytonii, 
all from Thornhill pond, 3 miles southeast of Berkeley, photographed February 14, 
1921. Newt larvae with external gills, hylas with well-developed caudal fins, ranas 
just hatched. About 1% times natural size. 3405. 
Fig. 13. Egg masses of Triturus torosus exposed by receding water in Thorn- 
hill pond, February 14, 1914. 1180. 
