1865.] Mr. J. Wood Varieties in Human Myology. 387 



In two muscular male subjects were found a well-marked sternalis 

 brutorum, very similar to that figured in the last series, and in both (as in 

 that case) on the right side only. In another male it was found on the 

 left side only ; and in a fourth, slips of tendon, intermingled with muscular 

 fibre, were found on both sides, passing from the sternal tendon of the 

 sterno-mastoideus down to the cartilages of the ribs as low as the sixth, 

 and evidently of the nature of a sternalis muscle. Two of these subjects 

 were affected with further abnormalities, confined to the arms. In the 

 right arm of one was found the tensor fascia palmaris before described, 

 and associated with the extensor brevis digitorum manus (given in fig. 2). 

 The latter was present in both hands. The palmaris longus on the left 

 side was much stronger than that on the right. In the right arm also 

 was a muscular slip connecting the flexor profundus with the flexor 

 longus pollicis, a double indicator muscle, and no less than three ex- 

 tensor tendons to the little finger. In the subject in which the sternalis 

 brutorum existed on the left side only, were found, in both arms, slips 

 connecting the flexor sublimis with the flexor longus pollicis, and a 

 distinct muscle, arising from the radius inside the last muscle, and be- 

 coming connected, by means of a long and strong tendon, with the perfora- 

 ting or deep tendon of the index just below the annular ligament, pre- 

 cisely similar to one given in the last series. On the dorsum of both 

 hands were found three well-marked and distinct muscular slips, forming 

 an extensor brevis digitorum, arising in common as high as the posterior 

 annular ligament. Small slips representing these, and passing to the 

 middle and ring-fingers only, have been found in no less than six other 

 subjects during last session. 



In another male left arm were found combined the following abnor- 

 malities, viz. three heads to the biceps, a double palmaris longus, and a 

 double tendon to the extensor minimi digiti. Right arm normal. 



In two subjects were seen, in the legs, good samples of the extensor 

 primi internodii hallucis, distinct muscles, with a strong tendon, as de- 

 scribed and figured in the last series. In five subjects were found, on both 

 legs, tendinous slips representing the peroneus quinti. In that from 

 which fig. 3 was taken (a very tall and muscular man), it will be seen that 

 the digital slip passes in a curious way through a division of a large tendon 

 of the peroneus tertius, at its insertion into the bases of the fourth and 

 fifth metatarsals. It is associated also with an abductor ossis metatarsi 

 minimi digiti. 



In connexion with these more common irregularities of the peroueal 

 tendons, the author would call attention to that given in fig. 5 from a 

 left female foot, in which the tendon of the peroneus longus (a), as it 

 turns over the cuboid bone, gives distinct and sole origin to the flexor 

 brevis minimi digiti (b), and to the outermost plantar interosseus of the 

 same digit (c). 



Of other detached muscular abnormalities observed during the session, 



