794 MR. ST, GEORGE MIVART ON THE [June 27, 



attached to the base of the back of the trochanter, immediately next 

 to the insertion of the gluteus medius on the one hand and of the 

 femoro-caudal on the other. 



Femoro-caudal (figs. 15 & 17, -F. C.)*. This exceedingly large 

 muscle arises from the infero-lateral aspect of the caudal vertebrae, 

 where it separates from the vertebral column by its backward intru- 

 sion (fig. 5, F. C), the contiguous parts of the ventral, and infero- 

 lateral series of caudal muscular cones. It is inserted, by a very large 

 and strong tendon, into the base of the trochanter on its extensor 

 aspect and above the insertion of the adductor. A little before its 

 insertion this large tendon gives off, nearly at right angles, a long 

 delicate one, which, passing down the thigh into the popliteal space 

 (figs. 17 & 18 y), is inserted into the interarticular cartilage be- 

 tween the femur and the tibia, as Stannius has stated f. 



The tibialis anticus (figs. 13, 16 & 18, T.A.) arises from the front 

 of the tibia, the part above the middle of the bone springing mainly 

 from its peroneal aspect, and the part below the middle from its 

 inner aspect. It ends in a single tendon, which is inserted into the 

 tibial side of the distal end of the metatarsal of the hallux. 



Extensor longus digitorum. This muscle arises, by a strong ten- 

 don (figs. 13, 15 & 16, E. L.D.), from the anterior surface of the 

 external condyle of the femur. It continues fleshy down to the 

 metatarsals, when it suddenly narrows and gives off two small ten- 

 dons, which pass, one on each side of the middle metatarsal bone, 

 near its proximal end. Of these two tendons, the peroneal one 

 curves round tibiad, and is inserted into nearly the middle of the 

 plantar surface of the third metatarsal. The other one is similarly 

 implanted into the second metatarsal. 



Extensor brevis digitorum. This muscle may be said to consist 

 of five portions: — 



(1) The first part (figs. 15 & 16, £". 5. 1) is an oblique slip, pro- 

 ceeding forwards and inwards, which arises from the peroneal aspect 

 of the lower end of the fibula, and is inserted into the dorsum of the 

 hallux. 



(2) The second part (figs. 15 & 16, £". B. 2) is similar in size and 

 direction. It arises from the fibula, below the last, and is similarly 

 inserted into the index digit. 



(3) The third portion (figs. 15 & 16, ^. -B. 3) arises, by a strong 

 though small tendon, from a pit in the middle of the anterior surface 

 of the astragalus. Passing between the two tendons of the extensor 

 longus digitorum, it is inserted into the dorsum of the third digit. 



(4) The fourth part (figs. 15 & 16, E.B.4) arises in common 

 with the preceding, but does not pass between the tendons of the 

 extensor longus digitorum. It is inserted into the dorsum of the 

 fourth digit. 



(5) The fifth and last part arises, by a strong tendon, from the 

 bottom of the anterior face of the astragalus (figs. 15 & 16, E. B. 5). 

 It is also inserted into the dorsum of the fourth digit. 



* This is the " sojis-caKcl/cn 2}}'cfi>>/'/" of Meckel {/or. cit. p. 285). 

 t Loc. cif. p. 133. no. 3. 



V 



