Waite — Two ZiPHioiD Whales 211 



mm. 



Extreme leiig'th of eraiiinm 853 



Length of roslniin ( f I'oui Ihe apex of the premaxilla to 

 the middle of a line drawn between the anteorbital 



notches) 574 



From middle of hinder edge of i)alate (formed by the 



pterygoids) to ajiex of rostrnm 678 



Greatest lieight of eraniuni from vertex to pterygoids . . 338 



Breadth of eraninm across superior margin of orbits . . 328 

 Breadth of cranium between zygomatic processes of 



squamosals 256 



Breadth between anteorbital notches 197 



Breadth of middle of rostrnm 68 



Breadth of occipital condyles 115 



Premaxilla'e, greatest width behind anterior nares . . . . 156 



,, least wddtli opposite anterior nares . . . . 110 



,, greatest Avidth in front of anterior nares. . Ill 



Width of anterior nares 50 



Length of tympanic bone 44 



CTreatest breadth of tympanic l)one 30 



Mandible, length of ramns 742 



„ length of symphysis 166 



„ greatest vertical height of ramus 113 



The skull has been well figured by others, but I have not seen a truly anterior 

 aspect illustrated. This is supplied in the accompanying photograph (fig. 2) and 

 shows the peculiar deflection of the teeth from the axes of the snout. The illus- 

 tration stated by Turner to be a front view of the skull is really an upper view, 



Teeth. The teeth originate at the hinder part of the mandibular symphysis, 

 but as during growth they are inclined strongly backwards they appear to have a 

 still moi-e posterior origin, an appearance increased ])y the fact that the apices 

 approximate immediately before the frontal portion of the head. The teeth are 

 band-like, the breadth of the band l.ving generally in the axis of the skull. In 

 aged examples, as has been often stated, the teeth meet, or even cross (*) and 

 limit the gape of the mouth, so that the method of feeding becomes a problem. 

 It is, however, with the juvenile tooth that we are more nearly concerned. The 

 sha])(' of that supplied by the animal now under consideration is shown in the 

 accompanying figure (fig. 6), the longer portion of the growing root being 



{i) Sutton, Proe. Zool. Soc, 1885, p. 440, fig. 7, 8. 



