Vol. xiv.-j Leach, The Myology of the Bell-Magpie. 29 



123. The complexus. 



124. The rectus capitis anticus minor. 



125. The flexor capitis inferior. 



126. The rectus capitis posticus major. 



127. The biventer cervicus. 



128. The longus colli posticus. 



129. The sacro-lumhalis. 



130. The longissimus dorsi. 



131. The obliquus colli. 



132. The longus colli anterior. 



133. The rectus capitis lateralis. 



134. The trachelo-mastoideus . 



135. The inter spinales. 



136. The inter articulares. 



137. The oUiquo-transver sales. 



138. The intertransver sales. 



123. The complexus [47] in Strepera is, as Shufeldt described for 

 the Raven, a well-developed muscle arising from the sixth, fifth, 

 and fourth vertebrae. The fibres soon unite and run forward as 

 a flat, ribbon-Hke muscle, to be united with the corresponding 

 muscle by fascia and inserted into the skull a short distance above 

 the occipital ridge. 



124. The rectus capitis anticus minor [47] is closely connected 

 by fascia with the last muscle (123). It arises from the 

 hypapophyses of the second, third, and fourth vertebrae, and runs 

 forward bound to the anterior side of the complexus (123) to be 

 inserted on the same fine of the skull. 



125. The flexor capitis inferior [48] is a masssive muscle in the 

 mid-line. It might almost be regarded, as Shufeldt pointed out, 

 as an " azygos " muscle, so closely are the two muscles blended. 

 It arises in common with 124 from the hypapophyses of the 

 second, third, and fourth cervical vertebra. It passes forward 

 on the base of the skull to be inserted into the basitemporal. 

 The branches of the one carotid artery can be seen posterior to 

 this muscle mass. 



126. The rectus capitis posterior major [49] arises from the neural 

 spine of the second vertebra. Its fibres spread out to be inserted, 

 almost touching their fellow of the opposite side on the back of 

 the skull. 



127. The biventer cervicus [49] [50] is a remarkable muscle on 

 each side. It arises from the neural spine of the first and second 

 thoracic vertebrae and the adjacent muscular and tendinous 

 network. It passes forward along the upper surface of the neck, 

 becomes tendinous at the groove on the upper side of the neck ; 

 again becoming fleshy and flat, it runs forward to the head, and is 

 inserted into the occiput under the insertion of the complexus 

 (123), and over that of the rectus capitis posticus major (126). 



128. The longus colli posticus [49] [50] is a complicated but very 



