| OCR Text |
Show 1876.] 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*48 Mandible. Length of ramus 2 10*75 Length of symphysis 8*05 Vertical height of ramus at coronoid process.. 4 82 Distance from the condyle to the hinder edge of the base of the mandibular tooth 1 9'53 Breadth of exposed part of mandibular tooth along upper margin of ramus 4*51 Length of mandibular tooth measured along anterior 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 nova zealandia. 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 25 inches from their anterior end they are 1*75 inch broad and 0*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 |
