170 ROY L. MOODIE 
Tubercuiulin 
acusticun. 
‘ 
mm IN 
Oe 
cerebellum 
sas ees 
thal SS: 
Liypo a Ses 
Fig. 8 Postero-lateral view of the intercerebellar region of the brain of the 
Coal Measures fish shown in a figures 15 and 16, to shows details of the supposed 
dorsal blood vessel. The posterior enlargement is possibly a venous sinus, al- 
though it was first interpreted as a pineal body. The objections to its being a 
pineal organ are that its position is most unusual and its stalk is directed in the 
opposite direction to that which the stalk usually occupies. It corresponds 
very well with a venous vessel as figured and described by Rex. X 8. 
Fig. 9 Left lateral view of one of the larger brains of a Coal Measures fish 
from Kansas. Compare with figure 16, from one of the smaller brains. The 
general plan of the two brains is similar. X 7. 
