540 Mr. J. Wood on Variations in Human Myology. [May 23, 



Meckel, inserted into the cuboid in the Kangaroo. In a male subject 

 (No. 14), the right Peroneus longus had a double tendon, one inserted 

 into the internal cuneiform, and the other into the base of the first me- 

 tatarsal. In a female (Ko. 15) the tendon of this muscle gave origin 

 in the sole to i\\Qflexo7' and opponens minimi digiti, as well as to the 

 third 'plantar interosseus, as in the variety figured in the author's paper 

 of 1865. In another female (No. 16) the Peroneus hrevis was, in both 

 legs, provided with a double tendon, both inserted into the usual place. 

 The peroneus tertius in the same subject was totally absent. In the left 

 leg of a male (No. 20) a slip of tendon was detached from the outer 

 border of the Tibialis anticiis muscle to be implanted into the inner 

 border of the anterior annular ligament and dorsal fascia. In both legs 

 of another male (No. 29) a more decided development in this direction 

 had resulted in a distinct, flat, spreading muscle, 3 inches long, arising 

 from the outer surface of the tibia below and distinct from the fibres 

 of the tibialis, and ending in a round tendon which was inserted into 

 the annular ligament and dorsal fascia below the malleolus. Such a 

 muscle was described by the author in his paper of 1864 under the 

 name of the Tensor fas cice dor salts pedis ^ occurring on both sides in a 

 female subject. 



In two subjects (Nos. 22 & 34) a considerable portion of the inner 

 fibres of the Fectineus were found to pass across the front of the deep 

 femoral artery to become inserted with the upper fibres of the Adductor 

 longus, an irregularity which does not seem to have been hitherto 

 noted. A similar extension of the origin of the adductor longus is seen 

 in the Marmot among the E-odents, in the Eatel of the Carnivora, and 

 in the Magot and Chimpanzee among the Quadrumana. 



No. 24 was found to possess a remarkable development in both feet 

 of an Opponens ot flexor ossis metacarpi minimi digiti. 



In the right leg of a muscular female subject (No. 25), the biceps 

 flexor cruris was provided with a third head. This consisted of an 

 elongated, rounded, and fusiform muscle (fig. 6, «), 8 inches long and 

 three-quarters of an inch wide, connected above by a rounded tendon, 

 2 inches long, with the strong fascia which covered the deep surface of 

 gluteus maximus (h h, cut and turned aside in the figure). Below, it 

 was united by a tendon, 1 inch long, with the ischial or long head (c), 

 just above its junction with the femoral head (c?) at the lower third of 

 the thigh. An additional head to this muscle, though not at all com- 

 mon, yet has been recorded by various writers, viz. by Meckel, from 

 the upper part of the "linea aspera;" by Gruber, from the internal 

 condyloid ridge of the femur ; by Henle, from the fascia lata near the 

 upper end of the linea aspe'ra ; and by ScBmmerring and Gantzer, aris- 

 ing from the tuber ischii. Of these, the three former joined the femo- 

 ral or short head, while in the instances given by the two last-named 

 authors, the abnormal head joined the ischial or long head. All having a 



