694 MK. 1'. G. PAltSONB ON TUB [Juiie 16, 



There is no Scalenus anticus ventral to the subclavian artery 

 and brachial plexus. 



The Scaleitus hrevis rises from the poBterior two or three cervical 

 transverse processes and is inserted into the first rib behind the 



The Scalenus longus rises with the last and is inserted into the 

 outer surfaces of the 2nd, 3rd, and 4th ribs. 



The Rectus capitis anticus major rises from the 3rd to the 7th 

 cervical transverse processes as well as, by an internal origin, 

 from the bodies of the anterior four thoracic vertebrae. Its 

 insertion is normal. On the outer side of the last muscle, sepa- 

 rated by it from the longus colli, is a muscle which rises from the 

 ventral part of the posterior four cervical transverse processes to 

 be inserted into the body of the axis and the ventral arch of the 

 atlas. 



The Longus colli is normal, and extends as far back as the 4th 

 thoracic vertebra. 



■ The Rectus capitis anticus minor and lateralis are normal ; the 

 former comes from the transverse process of the atlas, lying 

 external to the major, and ventral to the rectus lateralis. 



The Splenius capitis is normal and entirely covers the com- 

 plexus. 



The Splenius colli is continuous with the last, and is inserted 

 into the transverse processes of the anterior three cervical 

 vertebrae. 



The Trachelo-mastoid is very well developed ; it is inserted into 

 the outer part of the curved line of the occipital bone, into the para- 

 mastoid process, and into the transverse processes of the anterior 

 cervical vertebrae. Its insertion is tendinous, and there are two 

 other tendinous intersections further back. 



The Transversalis colli is large and is inserted into the ])osterior 

 five cervical transverse processes. 



The Gervicalis ascendens is inserted into the last three cervical 

 transverse processes. 



The Rectus capitis posticus major is distinctly bilarainar, a con- 

 dition I have also found in the Guinea-pig \ 



Muscles of the Anterior Extremity. 



The Trapezius rises, as in the Great Kangaroo and Bennett's 

 "Wallaby, from the ligaraentum nuchae and anterior six thoracic 

 spines ; it has a continuous fleshy origin except opposite the first 

 thoracic spine, where it is aponeurotic. It is inserted into the 

 clavicle as far as the origin of the cleido-mastoid, into the acro- 

 mion, the spine of the scapula, and the fascia over the infra- 

 spinatus. 



The Latissimus dorsi rises from the 5th, 6th, 7th, and 8th 



' Proceedings of the Anatomical Society, February 1892, p. x. 



