1046 



DB. P. CHALMERS MITCHELL ON THE 



muscle with only superficial and fascial origins. Anchor broad 

 and good slip to III. The P. brevis is strong but short, arising 

 only from the tibia distal to the end of the fibula ; its flattened 

 tendon passes over to the usual insertion. 



Text-fig. 180. 



^-^J-PLON. 



ANC 



Peroneal muscles in Njjctieorax gardeni. 



Description nnd lettering as in Text-figure 179 (p. 1041). 



Br. Bridge traversed by the tendon of the P. brevis. 



Ciconiae. Ciconia 7iigra. Disstoraepiscopus. Leptojitilus crumen- 

 ifertis (2 examples). Mycteria americana. Fseudoiantahis ibis 

 and Tantalus loculator. — In all these Storks the conditions were 

 practically identical. The P. longus was large and strong with 

 superficial and fascial origins and no deep origin, very broad 

 anchor and good slip to III. The P. brevis was absent, but 

 running across the tarsal joint parallel with the slip to III, and 

 therefore approximately at light angles with the normal position 

 of the P. brevis tendon, was a stout elastic ligament which kept 

 the tarsal joint flexed, so that after death the joint could not be 

 straightened without force until this had been cut. At first I 

 thought that this ligament might represent the brevis, but its 

 direction is difl^erent, and it does not resemble the indubitable 

 vestiges of the bi'evis which occur in some other birds. 



