454 



wards. In confirmation of this there are instances recorded both in man 

 and other animals where the sartorius femoris ended either by being- 

 inserted into the extensor muscles, the fascia of the thigh, or the 

 patella. 



Another slip of the latissimus I have found crossing the bicipital 

 groove, and binding the long head of the biceps in its place, to be 

 inserted into the anterior edge of the groove, under cover of the tendon 

 of the pectoralis major: the same arrangement I have found in Cer- 

 copithecus. A slip of fibrous tissue also exists not unfrequently, pass- 

 ing from the upper border of the tendon of the latissimus to the lower 

 and inner border of the capsular ligament of the shoulder joint, 

 stretching along the inner lip of the bicipital groove, and corresponding 

 to the suspensory frsenum of Winslow from the great pectoral tendon 

 along the outer lip. 



2. The lower costal fibres of the great pectoral muscle, in a stout 

 female subject, detached a distinct chondro-epitrochlear slip, which, 

 arising from the seventh costal cartilage, passed outward, and ultimately 

 downwards, to be inserted into the upper part of the inner condyle of 

 the humerus by a round, tendon. This variety is of interest, as usually 

 the costal fibres of this muscle are inserted above and behind the 

 sternal and clavicular portions. This muscular slip has been found 

 taking different courses, and inserted either into the brachial aponeurosis, 

 or intermuscular septum, when it is called the chondro -fascial, or even 

 into the short head of the biceps, the latter attachment being similar to 

 the mode of arrangement in Hylobates leucisetis, in which the entire 

 short head of the biceps springs from the pectoral muscle : the former 

 we find in the pig, where the lowest fibres of the pectoral extend down 

 to the fascia over the inner side of the ulna. I have found this epitro- 

 chlear slip in one instance detached from the clavicular portion of the 

 muscle. 



I have also found the long head of the biceps splitting the tendon 

 of the great pectoral, and passing down between the costal and sternal 

 fibres which were behind it and the clavicular fibres which lay in 

 front of it — a condition which has its prototype in Quadrumana. 



3. The omo-hyoid sometimes took an origin from the posterior 

 border of the middle third of the clavicle. In one of these cases its 

 scapular origin was completely suppressed, and its clavicular attach- 

 ment was overlapped by the extended fibres of the trapezius. 



4. The upper fibres of the serratus magnus of a slender male subject 

 extended at their insertion as far forward as the posterior border of the 

 suprascapular notch, behind the omo-hyoid muscle, and so occupied the 

 entire of the superior costa of the scapula. In this subject, likewise, 

 the superior and middle parts of that muscle were separated by a con- 

 siderable cellular interval, so as to appear quite distinct from each 

 other. This variety occurred to Theile in a subject in which the omo- 

 hyoids were absent. 



5. The rectus abdominis I have found to vary much in the 

 extent of its attachments : sometimes it ascended as far as the fourth 



