176 ROY L. MOODIE 
TZ) 
Lateral lobe alamus 
Tuberciulum OF Cerebeltu. 
ACUSTICUIR 
Bee 
olfactor 
tect 
“Optic chiasm 
: ee Hypothalamus 
‘ 4 5 : . ~ dobus inferior) 
Saceus vasculosuss 
Mypoohy sis’ 
Fig. 16 Right lateral view of the same brain as shown in figure 15. xX 8. 
The portion of the external ampulla labeled sinus is very unusual. The anterior 
ampulla is evident on several other specimens and is described and figured under 
the section on the ear. The utriculus (U¢.) and sacculus are similar to those of 
Acipenser as figured by Retzius. The upper part is, of course, the utriculus and 
the lower part the sacculus, which latter is evident below the external (horizontal) 
semicircular canal, 
