1054 DR. p. CHALMERS MITCHELL OK THE 



is present, arising from nearly three-quarters of length of the 

 shaft and with usual insertion. 



Dicholophidae. Cariama cristata (3 examples). — The P. longus 

 is large witli superficial and fascial and slight deep origins and a 

 very long tendon which gives off a very broad anchor and is con- 

 tinued as a slip to III. The P. brevis is represented by a minute 

 muscular head arising from the fibula and tibia opposite the 

 biceps ligament, and a very long sleiTder tendon close to the tibia 

 which after crossing the tarsal joint flattens out to the usual 

 insertion. 



Otididfe. Otis tarda (2 examples). — The P. longus is very 

 strong with superficial, fascial, and separate deep origins. The 

 tendon is not long and after giving ofl:" a broad anchor is continued 

 as the slip to III. The P. brevis was absent. 



Rhinochetidee. Khinochetus jtibatus. — The P. longus was very 

 large with all three origins, a stout anchor and good slip to III. 

 The P. brevis was also well developed with an extensive origin 

 along the length of the fibula and adjacent surface of the tibia 

 and had the usual flattened insertion ; it appeared to me to be 

 larger in the Kagu than in any of the other Gruiform birds. 



Eurypygidje. Eurypyga helias. — The P. longus was well 

 developed with all three origins, a broad anchor and good slip to 

 III. The P. brevis was also relatively strong, arising from the 

 upper half of the fibula and adjacent tibia and passing into a long 

 tendon which flattened out as it appi-oached the normal insei-tion. 



Heliornithidae. Heliornis fulica sen Podoa surinamensis (2 

 examples). Podica senegalensis. — The P. longus was large in all 

 these but with only superficial and slight fascial origins, the 

 deep origin being practically absent. The anchor was very broad 

 and strong, but the usual slip to III, although certainly present, 

 was delicate and could hardly have been functional. The P. 

 brevis was large and strong, with a rounded origin from the 

 proximal portion of the fibula, then a very long tendon partly 

 ossified which passed under a partly calcified bridge to flatten out 

 to the usual insertion. 



Of the Gruiform birds the Ptails and the Kagu seem to 

 present the most generalized condition of the peroneals since 

 both are present and actively functioiial, the longus being 

 the dominant muscle. In the Cranes, Seriemas and Bustards, 

 the brevis shows signs of disappearing. The Sun-bitterns and the 

 Finfoots stand apart from the others, the foriner recalling the 

 condition most frequently found in the Limicolse, and the latter, 

 with the tendency for the longus to be reduced, being quite 

 peculiar in the group. 



Oharadeiiformes. 



L i m i c o 1 fe. 



Charadriidpe. Limosa lapponica. A otitis hypoleucits. Gallinago 

 coilestis. Machetes ^^tg'HarK. Scolopax rtisticAda. (2 examples). 



