CHAEADEIUS. 



139 



It is a resident in southern and eastern Australia, frequenting the rivers rather than Geographi- 

 the coast. It is not seen north of Port Denison, nor in Western Australia, nor in ^? ^^ ^ ^ ^' 

 Tasmania, but has occurred once in India (near Madras). 



It appears to be a considerably modified C. minor, and, like that species, to vary very 

 shghtly with sex or season. 



Subgenus iEGIALOPHILUS. 



Charadkii caud^ non fascia nigrescente prope apicem ornate : primariarum interiorum pogoniis Diagnosis of 



, . J u • IT,- subgenus, 



externis ad basin alms. ° 



The Sand-Plovers form a well-defined subgeneric group, of which the Kentish Plover Subgeneric 

 [C. cantianus) may be regarded as the type. They may be briefly diagnosed as having the 

 base of the outer web of the innermost primaries white (which forms a white wing-patch, 

 somewhat similar to, though more basal than, that of G. hiaticula and its allies), but having 

 no black subterminal band across the tail. The latter is either entirely absent or is so 

 rudimentary as to consist of only a darker shade across some of the feathers, whilst the 

 broad white tips are only represented by a narrow pale margin. 



All the Sand-Plovers have white axillaries and white belUes, but none of them have 

 a hind toe. 



GEOGRAPHICAL DISTRIBUTION 

 (during the breeding-season) . 



Majores. 



C. ASIATICUS 

 C. MONGOLICUS 



Pal^auctic Region. 



South. 



Caspian Basin. 

 Mongolia. 



Minores. 



C. CANTIANUS. 



Ethiopian Region. 



St. Helena. C. sanct^-helen^. 



Inland plains. C. pecuakius. 



West Africa to Madagascar C tenellus. 



South Africa. C. marginatds. 



t2 



