PLATE 8 



EXPLANATION OF PLATES 



(Cryptobranchus allegheniensis) 



Bichromate-acetic-formalin fixation except for figures 260 and 261 which were 

 made from living specimens anaesthetized with chloretone. X 4. 

 25S Stage 22. Lateral view. 



259 Stage 22.5. Lateral view. 



260 Stage 23. Dorsal view of an embryo ready to hatch. 



261 Stage 23. Lateral (slightly ventral) view of a newly-hatched larva. 



574 



