CERVICAL VERTEBRA. 



[CHAP. 



developed inferior lamellae (see Fig. 7, p. 27, /') especially 

 large in the fifth and sixth. In the latter the lower edge of 

 this lamella is frequently hollowed in the middle, and pro- 

 duced at each extremity, so that the transverse process has 

 a trifid appearance. This is especially marked in the Felid<z. 

 The transverse process of the seventh vertebra has no inferior 

 lamella, and its base is imperforate. 



Metapophyses are generally more or less developed on the 

 cervical vertebrae of the Carnivora, and there are also in 

 some genera small backward projecting tubercles (Jiyperapo- 

 physes, Mivart) situated on the laminae of the arch, rather 



FIG. 12. Side view of axis of Dog, |. j spinous process; o odontoid process ; 

 pz posterior zygapophysis ; t transverse process ; v vertebrarterial canal. 



internal to the posterior zygapophyses, not usually found in 

 other vertebrae. 



In the INSECTIVORA the cervical vertebrae vary consider- 

 ably in their characters. The atlas has usually short trans- 

 verse processes. Generally the spinous process of the axis is 

 large and prominent, and that of the other vertebrae very 

 small, but in Centetes and Potamogale they are all more or less 

 elongated. The neural arches in some (as Myogale and 

 Sore:t) are reduced to mere filaments. In the mole (Taipei] 

 the transverse processes of the fourth, fifth, and sixth 

 vertebrae are much expanded antero-posteriorly, and overlap 



