138 Anatomy of Sperm Whale Fetus 
in the Caaing Whale. If this identification is correct there would 
appear to be no vestige in this foetus of a separate right nostril. 
There is here but one orifice, which is, without question, on the left 
side. It is a further conclusion that in an older fetus still (that of 
20 inches) there is still less reason for the persistence of a right 
TExtT-Fies. 5-7. 
OLDER Ferus. 
5. Left side of head. The conspicuousness of the eye is somewhat 
exaggerated. 
6. Head viewed fromabove. The folds of the partly collapsed upper surface 
are to be noted, 
7. Front view of anterior region of head showing the blowhole. The latter 
appears to be in the middle, but the whole region is slightly pressed over 
to the right. 
