The Vertebral Musculature. 183 



(g) The longus atlantis. Origin: Lateral to the longus capitis, 

 from the transverse processes of the third to sixth cervical 

 vertebrae. Insertion: Transverse process of the atlas. 



The longus capitis should be divided near its insertion. 

 (h) The rectus capitis anterior. Medial portion of the ventral 

 surface of the transverse process of the atlas. Insertion: 

 Basioccipital bone. 



The caudal musculature in the rabbit comprises, in addition to the 

 posterior extension of the cutaneus maximus, the following axial 

 muscles: 



(a) The extensor caudae medialis. It lies in the furrow between the 

 spinous and articular processes of the sacral and caudal vertebrae, 

 and is inserted on the transverse processes and dorsal surfaces of 

 the caudal vertebrae. 



(b) The abductor caudae posterior arises as a continuation of the 

 multifidus in the groove between the articular and transverse process 

 and is inserted on succeeding vertebrae. 



(c) The abductor caudae anterior. Origin: Ischial spine. Insertion: 

 Lateral surface of the sacrum and the transverse processes of the 

 caudal vertebrae. 



(d) The flexor caudae, Origin: Ventral surface of the sacrum and 

 anterior caudal vertebrae. Insertion: Ventral surfaces of succeeding 

 vertebrae. 



