PLOVERS. 28? 



SQUAT AROLA. Generic characters. Bill rather 

 strong-, tumid, flattened on the culmen, cylin- 

 drical towards the tip, which is hard ; nasal 

 groove wide, more than half the length of 

 the bill ; nostrils linear, pierced in the nasal 

 membrane ; wings long, pointed, first quill 

 longest ; legs rather short, bare for a short 

 space only above the tarsal joint ; toes con- 

 nected by a small basal membrane, slightly 

 fringed on their edges; hallux rudimentary 

 or wanting. 



Types, S. cinerea, plumanus, Virginiamis. Cos- 

 mopolite. 



Note. Breed inland ; gregarious except during 

 incubation ; undergo a seasonal change. 



