488 Mr. J. Wood on Variations in Human Myology. [June 18, 



the abnormalities of that muscle. On this side of the subject no proper 

 cleido-occipital was found ; but on the other (left) side, this muscle was 

 large, well formed, and separate, both from the trapezius and sterno-cleido- 

 mastoid. 



6. Levator anguli scapulce, — The variations of this muscle have been 

 this year recorded with a view to throw light upon the occasional occur- 

 rence in the human subject of the levator claviculce described by the 

 author in former papers. 



In 2 males (Nos. 2 & 6) and 2 females (Nos. 20 & 29) this muscle was 

 much divided, forming a distinctly double muscle, one from the two upper, 

 and the other from the third and fourth cervical transverse processes. 

 Such an arrangement is figured by Cuvier and Laurillard in their plate 7 

 of the Anatomy of a Negro. The upper one is there marked as the repre- 

 sentative in Man of the omo-trachelien" (levator claviculge) of animals. 



A more perfect homologue of this muscle in the human subject, how- 

 ever, has been recorded by Macwhinnie (op. cit. p. 194), and by the 

 author in his former papers — arising from the transverse process of the 

 atlas, and, in some, as low down as that of the third cervical vertebra, and 

 inserted into the middle or outer third of the clavicle. 



Such a muscle has been noted and described by the author in 5 male 

 subjects out of 1 74 of both sexes in whom it has been carefully looked for. 

 Macalister has also found it in a spare female {op. cit.). In No. 5 of the 

 subjects noted in column 8 of the Table of the present year, a considera- 

 ble and long muscular slip, arising by a tendon from the transverse process 

 of the third cervical vertebra, was found lying superficial to the fibres of 

 the levator anguli scapulae, and inserted into the fascia placed immediately 

 behind the clavicle and covering the axillary surface of the first digitation 

 of the serratus magnus muscle. A muscle similar to this was found by 

 Dr. Murie in the Bushwonian {op. cit.), and was rightly looked upon by 

 him as an imperfect levator claviculce, the insertion of which had only just 

 failed to reach the clavicle. Kelch records that he saw, in a female subject, 

 a triple division of the levator anguli scapulae, the middle part sending off a 

 slip to the scapulo-thoracic fascia (Beitrage zur pathologischen Anatomic, 

 1813, XXV. S. 33). Rosenmiiller found a slip from, the first cervical trans- 

 verse process, inserted into the first digitation of the serratus magnus (De 

 nonnullis Muse. &c. Leipzig, 1814, S. 5). These were, no doubt, speci- 

 mens of the last-mentioned variety. In the male subject (No. 6) the 

 levator anguli scapulae was divided into six slips along its whole length, 

 arising from the five upper cervical transverse processes, and all inserted 

 into the usual place. 



On the left side of a female (No. 20), the subject of fig. 3, a less exten- 

 sive division of its fibres was found, combined with a double insertion, and 

 a significant fusion of the lower portion with the serratus magnus and the 

 rhomboideus minor. This arrangement supports and illustrates the homology 

 first pointed out by Meckel (Archiv, viii. S. .585, and Muskellehre, Bd. ii. S.. 



