PLATE 12 
EXPLANATION OF FIGURES 
29 to 31. Stages 1,5, and 6. Heads of embryos, X 73. Showing changes of 
size and form in stages studied. 
32 Stage 5. Diagrammatic median view of ear capsule compared with that 
of Lacerta. The outlines for Eumeces (solid lines) are taken from figure 8 of 
this paper; those for Lacerta (dotted lines) from Gaupp’s figure 7. 
33. Stages 2 and 5. Diagrammatic view of lateral wall of temporal region 
of stage 5 superimposed upon that of stage 2. The outlines for stage 2 are based 
upon an accurate graphic reconstruction; the proportions of stage 5 are somewhat 
distorted to bring corresponding portions into coincidence. For fuller descrip- 
tion, see page 175 of text. 
