140 ESCHRICHT AND REINHARDT 



PLATE III. 



Fig. 



1. The skull of the thirteen feet long newborn Greenland whale, six times diminished, 



2. „ „ forty-three feet long hump-back {Megaptera boops, Fbr.), twenty times 



diminished. 



3. ,, ,, fifty-three and two thirds feet long fin-whale {Balcenoptera musoulus, 



J. Miill., Rorqual de la Méditerranée, Cuv.), twenty times diminished. 



x^l three seen from above. The letters have the following significations in all the figures : 



b. That part of the parietal which covers the superior surface of the orbital process of the frontal. 



f. The orbital process of the frontal, 



y. The middle piece ,, 



i. The intermaxillary. 



k. The condyle of the occipital. 



/. The lachrymal. 



m. The portion of the superior maxillary belonging to the superior surface of the upper jaw. 



m'. The posterior process of the superior maxillary. 



m°. The external „ „ 



n. The nasal bone. 



o. The squamous portion of the occipital, 



o'. The articular „ „ 



q. The condyle of the lower jaw. 

 r. The rami „ ,, 



t. The lateral process of the temporal. 



V. The internal surface of the vomer, exposed by the removal of the primordial vomer, 

 æ (in fig. 1). Ligaments between the lateral processes of the frontal and the temporal. 

 z (in fig. 2). The zygomatic. 



PLATE IV. 



The posterior part of the head of the forty-seven and a half feet long Greenland whale 

 skeleton, seen from above, twenty times diminished. 



a. The articular process of the temporal. 



b. The process of the parietal, covering the groove of the optic nerve. 

 /. The frontal. 



i. The intermaxillary. 

 k. The condyle of the occipital. 

 m. The superior maxillary. 

 n. The nasal bone. 



n' . The anterior part of the same bone which here happened to be of a more brittle structure, and 

 a darker colour. 



