1868.] Mr. J. Wood on Variations in Human Myology. 489 



Fig. 3 (Subject No. 20). 



402) between the levator anguli scapulse of the human subject and the upper 

 or cervical part of the serratus magnus as found in the lower animals — an 

 homology which was disputed by no less 

 an authority than Cuvier. The muscle 

 arose by five digitations from the hinder 

 tubercles of the five upper cervical trans- 

 verse processes, and by a sixth from the 

 fibres and fascia of the transversus colli 

 muscle. Those from the three upper 

 and part of the fourth digitations (a) are 

 inserted into the usual place at the su- 

 perior angle of the scapula. The two 

 and a half lower digitations are inserted 

 as a separate muscle (6) into the verte- 

 bral border of the scapula as low dovm 

 as the spine, and are intimately con- 

 nected by their deeper surface with the 

 fibres of insertion of the serratus mag- 

 nus. A muscular slip from its lower 

 border is attached at its origin to the 

 transversahs colli, and through it to the 

 upper cervical transverse processes ; at 

 its insertion it is blended with that of the 

 rhomboideus minor (d). The lower por- 

 tion of the muscle may be considered as 

 representing the first and second stages of that differentiation and transfer 

 of insertion of some of the fibres of the levator anguli to the spine of the 

 scapula which, in the omo-trachelien or omo-atlanticus of animals, attains to 

 the acromion process, and in the levator claviculce of the Quadrumana and 

 Man reaches, on the same line of departure, to the clavicle. Macwhinnie 

 records a shp of the levator anguli inserted into the spine of the scapula 

 (op. cit. p. 194), a little further advance in the same direction, in the 

 human subject. 



In two other male subjects (Nos. 9 & 1 0), also, the levator anguH scapulse 

 was connected by muscular slips with the hinder surface and upper fibres 

 of the serratus magnus. In No. 10 it also received a slip from the scalenus 

 medius, and in the female (No. 29) from the scalenus posticus of one 

 side, and the serratus posticus superior on the other. In No. 34 it gave 

 an interdigitating slip to the splenius capitis high up in the neck. 



7. Rhombo-atloid. — In 3 male and 2 female subjects was found a 

 distinct muscle arising with the fibres of the splenius colli from the trans- 

 verse process of the atlas, usually about half an inch wide, and forming a 

 muscular band which was placed superficial to the serratus posticus supe- 

 rior, and behind the rhomboideus minor, and inserted either into the upper 

 fil)res of tlie tendon of origin of the rhomboideus major or into the verte- 



