ml dl, cpi 1 QU epil hm 



ml dl, Xl^,<2pi^ P QU epil ^ 



i£ vhrn md Hm 



Figs. 1 to 8 Camera-lucida drawings of stages 21, 23, 25, 26-27, 30, 33, 35, 

 and 35+ of embryos of Amblystoma punctatum, showing development of neural 

 crest, ectodermal placodes, and primordia of lateral-line sense organs. Neural 

 crest is stippled and placodes and primordia are solid black. X 10. For ab- 

 breviations see page 430. 



431 



THE JOURNAL OP EXPERIMENTAL ZOOLOGY, VOL. 35, NO. 4 



