168 



GEORGE L. STREETER 





C. sc. ant 



Crus commune 

 C. sc. post. ', 



( imperfect) 



Crus commune 



C. sc. post- 



-_ -., (imperfect) \ 



/^. If C. sc.lat 



C. sc. lat 



Lagena -« 



plate and protrudes in the pharynx. On the lateral surface of 

 the anterior canal there is a deep pit indicating the usual site at 

 which it is pinched off from the vestibule and crus commune, 

 otherwise the separation is lacking. The presence of a lagena is 

 questionable, and the endolymphatic appendage is entirely lack- 

 ing. This, like Labyrinth XVII, through quite abnormal, can be 

 fairly definitely oriented. 



Labyrinth XIX: (figures 37 and 38). The photograph shown 

 in figure 37 was taken from Series X 11 A, slide 2, row 2, section 2. 



