called ^^ Steypirey^r'''' hy the Icelanders. 



331 



Physalus section are no less strikingly developed. Especially 

 the orbital process of the frontal presents exactly the form pe- 

 culiar to this section, being not only very short in the trans- 

 verse direction of the head, but also nearly twice as broad near 

 its base as along its external border, tapering therefore very much 

 in an outward direction. The same is the case with the nasal 

 bones, of which a figure nine times diminished is given beneath 

 (fig. 3), though, indeed, in a point of minor importance they 



Fig. 3. 



Nasals. 



appear to deviate a little from those of Balcenoptera antiquo- 

 rum^ the only species of this section in which they have hitherto 

 been described and figured with accuracy. They are rather 

 short, and deeply hollowed on the anterior edge and anterior 

 part of their superior surface, so that an obtuse ridge is formed 

 along the middle line, projecting forwards in a roundish point, 

 as in the species just mentioned ; but at the sametimethere is less 

 difference in their breadth before and behind than in the latter. 

 The hyoid, finally, indicates the same section, as will be seen 



Fig. 4. 



Hyoid. 



