Systematic Position of the Ruff. 



613 



In the Tringinse they are long and ribbon-shaped, and towards 

 the pterygoid articulation tend to be more parallel. 



In the Eroliinse the palatal plates are M'ider posteriorly 

 than anteriorly. In the Tringinse the external and internal 



Text -figure 11. 



TTtX f> p. 



B 



Palatal structure of tlie skulls of: — A. Tringn nebiilaria ; B. Erolia 

 alpina ; C. Machetes pugnax. fe. = fenestration of the maxillary 

 plate ; mx.p.p. = maxillo-palatine process ; pa. = palatines ; vo. = 

 vomer. 



borders are parallel. In the Eroliinse the palatal groove is 

 shallower than in the Tringinae, the inner and outer lamina 

 of the latter being deeper and projecting downwards in a 

 more conspicuous manner. By a reference to the figures 



