Fotsom. — Development Anurida. 
Fig. 23. 
Fig. 24. 
Fig. 25. 
Fig. 26. 
Fig. 27. 
Fig. 28. 
PLATE 4. 
Anterior aspect of a transection of germ band at mandibular segment in 
Stage 7. The section being thick shows both mandibles and, behind 
them, the superlinguz. X 762. 
Left aspect of embryonic head, represented as if transparent, at Stage 7. 
x 480. 
Ventral aspect of lingua and first maxilla at Stage 7. 480. 
Dorsal aspect of head of right maxilla at Stage 8. X 762. 
Dorsal aspect of lingua and superlingue at Stage 7. X 762. 
Paramedian section to show the primitive cephalic ganglia at Stage 5. X 
762. 
