CHAEADEIUS. 



173 



CHARADRIUS COLLARIS. 



AZABA'S SAND-PLOFEB. 



Charadrius, subgen. jEgialophili minores, pedibus pallidis : nucM nee collar! nigro, nee eollari Diagnosis. 

 albo ornate : pectore fascia nigr4 notato. 



No local races of this species are known. 



Variations. 



Charadrius collaxis, Vieillot, N. Diet. d'Hist. Nat. xxvii. p. 136 (1818) . 



Charadrius azarse, Temminck, PI. Col. no. 184 (1823). 



Charadrius larvatus, Lesson, Man. d'Orn. ii. p. 318 (1828). 



Hiaticula azarae (Temm.), Gray, List Birds Brit. Mus. iii. p. 70 (1844) . 



Hiaticula collaris (Vieill.), Sdater, Proc. Zool. Soc. 1860, p. 290. 



iEgialites collaris {Vieill.), Sdater ^ Salvin, Proc. Zool. Soc. 1869, p. 253. 



^gialitis gracilis, Cabanis, Journ. Orn. 1872, p. 158. 



Synonymy. 



Plates. — Temminck, PI. Col. no. 184. 

 Habits.— Bartlett, Proc. Zool. Soc. 1873, p. 309. 

 Eggs. — Harting, Proc. Zool. Soc. 1874, pi. Ix. fig. 7. 



Literature. 



Azara's Sand-Plover is a tropical form of the Kentish Plover {C. cantianus), but the 

 black pectoral band is complete in adult birds, and nearly so in young in first plumage. 

 Otherwise it is difficult to distinguish from some other representatives of the Kentish 

 Plover {C. marginatus, C. nivosus, and C. dealbatus), all of which, like it, have pale legs. 

 From C. peroni, which also has pale legs, it is easily distinguished by the absence of either 

 a white or black nuchal collar. 



The plumage of male and female birds, both in summer and winter, presents no 



Specific 

 characters. 



