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recent date than the rest of the literature I was in a position to consult, and 

 this carefully edited publication supplying a wealth of materials for demon- 

 stration in the shape of numerous photos, it appears to me desirable to point 

 out the following few things in connection with my reflections on the position 

 of the lower maxillary. 



The protrusion of the lower-jaw before the upper-maxilla in Balaenoptera 

 borealis Lesser, is still clearly perceptible in plate XXXII, figs. 1, 2, 4, 5; and in 

 plate XXXIII figs. 4 & 6, whereas from several illustrations the conclusion 

 is readily derivable, that the depression behind the processus coronoideus is 

 located before the eye. Also the great width of the lower-jaw is sufficiently 

 apparent from a few photos. 



Attention may also be called to Brehm's own statement, that on the 

 mouth being closed the entire upper-jaw can be contained in the lower-jaw. 



