1876. J DR. J. V. HAAST ON MESOPLODON FLOWERI. 481 



maxillae to a line drawn between the ante- ft. in. 



orbital notches 2 3*48 



Greatest height from top of nasal to lower base 



of pterygoids 1 3 - 80 



Greatest breadth across postorbital process of 



frontals 1 3'22 



Breadth of base of rostrum between bottom of 



anteorbital notches 5*90 



Breadth of rostrum in the middle 2*71 



Greatest width of the two nares 2*15 



Height of crest above occipital foramen 8*75 



Distance from point of rostrum to crest over 



blowers (in a straight line) 2 8 - 4S 



Mandible. 



Length of ramus 2 



Length of symphysis 



Vertical height of ramus at coronoid process. . 



Distance from the condyle to the hinder edge of 

 the base of the mandibular tooth 1 



Breadth of exposed part of mandibular tooth 

 along upper margin of ramus 



Length of mandibular tooth measured along an- 

 terior edge from upper margin of ramus to 

 crown 8'74 



Hyoid Bones. 



The basihyal and thyrohyal are united into one bone ; the two 

 latter are each 4'5 inches long and 2*1 inches broad at their junction 

 with the basihyal. The anterior edge of this bone is formed by two 

 processes, advancing considerably beyond its general outline and 

 separated in the centre by a deep notch, in which respect the bone 

 resembles that of Epiodon novce zealandiee. 



The two posterior points of the thyrohyals stand 7*2 inches apart. 



The stylohyals are 7'5 inches long ; they possess a distinct head 

 for their articulation with the skull, and have afterwards for some 

 distance still a roundish form, then gradually flattening till about 

 2 - 5 inches from their anterior end they are 175 inch broad and 

 - 5 inch thick, the upperside having a sharp ridge and the lower 

 side being flattened. 



Vertebral Column. 



The number of vertebrae are as follows : — 



Cervical 7 



Thoracic 10 



Lumbar 10 



Caudal 19 



46 



