40 



U.S. NATIONAL MUSEUM BULLETIN 2 73 



authors. I think Sirena (1871) used the name in Arnold's sense and 

 not in that of trying to indicate a homology between a muscle of the 

 howler and the m. cervicalis ascendens of marsupials as described by 

 Coues in 1872. For these reasons it can be assumed that none of the 



Figure 15. — Deep oblique and short system muscles in the neck (1, m. rectus capitis 

 posterior minor; 2, m. rectus capitis posterior major; 3, m. obHquus capitis superior; 

 4, m. obliquus capitis inferior; 5, m. multifidus; 6, mm. semispinalis et spinalis capitis). 



