




EXPLANATION OF PLATE XXV. 
"1G 25. Same as Figs. 19, 20, and 21, but a still deeper dissection. Both 
alls have been entirely removed. On the left side the adductor mandibulae, 
levator arcus palatini, the dilatator operculi, and the upper half of the hyo- 
ular have also been removed. X 13%. 
“Fic. 27. Same as Fig. 22, but showing the nerves only. X 2. 
Fic. 28. Reconstruction from a series of transverse sections of a 35 mm. 
Amia to show the dorsal aorta and its branches. 
