380 



WALTER E. CAMP 



Oes. 



Fig 3 Ventral view of a wax reconstruction of the pharnyx of an embryo 

 33 1mm long (8. C. 8). X 24. The gill-pouches have been partly cut oft and 

 their cavities represented in black. M., mouth; H.s., hypophyseal stalk; I to 

 VI, first to sixth gill-pouches; T., thyreoid; R.s.b., right suprapencardial body, 

 L.s.b., left suprapeiicardial body; Oes., oesophagus. 



