142 ESCHRICHT AND REINHARDT 



PLATE V. 



Fig. 



1. The riglit half of the head of the forty-seven and a half feet long Greenland whale skeleton, 



showing a section sawn vertically through the mesial line, twenty times diminished. 

 The explanation of the letters in this figure is given at p. 96. 



2. The right ramus of the lower jaw of the same head, seen from within, diminished to the 



same amount. 



3. The posterior part of the same ramus of the lower jaw, seen from above, diminished to the 



same amount. 

 The letters have the following significations in both these figures : 



b. The condyle {processus condyloideus). 



c. The coronoid process. 



d. The great opening for the vessels and nerves of the lower jaw. 



e — g. The groove formed by a row of foramina for the exit of vessels and nerves along the upper edge. 

 m. The inner surface of the ramus of the lower jaw\ 

 n. The outer „ ,, „ 



o. The angle of the ramus of the lower jaw turned downwards and Inwards {angulus maxillæ 



inferioris). 

 X. The groove for the primordial inferior maxillary, or Meckel's cartilage. 



4. The left petrous bone of the forty-seven and a half feet long Greenland whale skeleton, 



seen from beloAv and in front, in its natural connection, with the adjoining bones 

 and fibrous tissue, four times and a half diminished. The signification of the letters 

 is given at p. 93. 



5. The internal nasal passage of the right half of the head of the forty-seven and a half feet 



long skeleton, represented in the first figure of this Plate, ten times diminished. The 

 letters are explained at p. 95. 



PLATE VL 



All the figures in this Plate are taken from the hyoids and the larynx of the forty-seven and a 



half feet long Greeitland whale skeleton, six times diminished. 

 1. Shows the hyoids and the larynx in their natural connection from behind, or, more properly 

 speaking, from the dorsal surface. 



a. The body of the hyoid. 



a! — a' The still cartilaginous obtuse points of its two lateral cornua. 



h — b. The two stylo-hyoid bones. 



c — c. The ligament by which the latter are attached to the anterior cornua of the hyoid. 



d—d. The ligaments by which they are attached to the petrous bones. 



