12 



AEKIV FÖR ZOOLOGI. BAND 7. N:0 10. 



The right bone is oonsiderably broader and stouter than the 

 left. In botli the greatcr part must be regarded as ihum 

 Avhich expands to to a broad ala measuring 95 mm. in the 

 right and 100 mm. in the left across the anterior end which 

 is rather strongly convex on the ventra] surface and a little 



Fig. 9. The same bones as fig. 8 but seen 

 from the opposite side. 



I 





ii 



Fig. 10. The right 

 pelvic bone of the 

 same whale as fig. 

 9, irs. lateral view. 



concave on the opposite side. The right ihum retains a 

 considerable breadth in its posterior part as well, and mea- 

 sures about 67 mm. about half way between the anterior 

 end and the pubic rudiment. It is more convex, resp. con- 

 cave in its posterior portion. The left ilium narrows gradu- 

 ally towards tlie pubis. 



