Paekee.— Notes on Balaenoptera museulus ? 5 



correspondence in the proportions of the various parts of the skeleton, 

 between the present specimen, and acknowledged examples of BdUmoptera 

 museulus {—Physalus antiquorum). 



The Skull. Inches. 



Length in a straight line 148 



Breadth at the squamosals (greatest breadth of skull) 68 



„ of condyles „ . 13$ 



,, of exoccipitals .. .. .. .. .. .. .. 47$ 



Length of supra-occipital . . . . 30 



„ of orbital process of frontal 26 



Breadth of „ „ ,, , at base 29$ 



„ „ ,, ,, , at outer end 15$ 



Length of nasal „ . . . 11 



Breadth of both nasals, posterior end 4$ 



„ „ ,, anterior „ 9$ 



Length of beak from middle of curved border of maxilla to tip of 



premaxilla 102$ 



Length of maxilla . . . . 113 



Projection of premaxilla beyond maxilla.. 10 



Greatest width of nasal apertures 14 



Breadth of both maxillas at posterior end 15 



„ ,, across orbital process (following the curve).. 73 



beak at base, following the curve 54 



„ middle „ „ 26$ 



maxilla at same point „ 8f 



premaxilla „ „ . . 4 



Length of mandible in a straight line . . . . 144 



Height of ,, at coronoid process . . .. 15$ 



,, „ at middle 10J 



Amount of curve of mandible, i.e., greatest distance of inner surface 



from a straight line between the ends 18| 



Length of jugal in a straight line 12$ 



Width of jugal at anterior end 6 



„ „ posterior , 2 



„ „ narrowest point 1J 



Amount of curve of jugal (measured as for mandible) 2J 



Length of lacrymal in a straight line 9$ 



Greatest breadth of lacrymal 3| 



Length of tympanic 5$ 



„ „ including external process 13 



Breadth ,, 4| 



Thickness „ 2$ 



The Hyoid Bone. 



Extreme width in a straight line 28 



Length of body from posterior edge to fork of anterior cleft . . . . 5J 

 „ „ „ ,, ,, extremity of anterior corner or 



process for articulation of stylo-hyal 8 



Breadth of body, about , , . . . , . . . . . . . . 6 



