OCHTHODROMUS. 107 



surface white, with a patch of brown on each side of upper breast. 'Bill 

 black; tarsus greenish gray or pale olive; toes dusky or blackish; iris 

 brown.' (Hume.) 



"Young. Similar to the adults in winter plumage, but dark brown, 

 with faint edges of sandy buff to the feathers of upper surface; eyebrow 

 and sides of face washed with sandy rufous, a strong shade of which color 

 pervades chest and sides of upper breast/' (Sharpe.) 



In winter plumage Ochthodromus geoffroyi and 0. mongolus are very 

 similar but the former may be recognized by its larger size and longer 

 bill. In a male the wing measures 136; tail, 57; exposed culmen, 24; 

 tarsus, 36 ; middle toe with claw, 24. Wing of a female, 140 ; tail, 55 ; 

 exposed culmen, 24; tarsus, 37; middle toe with claw, 23. 



93. OCHTHODROMUS MONGOLUS (Pallas). 

 LESSER SAND PLOVER. 



Charadrius mongolus PALLAS, Reise Russ. Reichs (1776), 3, 700. 

 Ochthodromus mongolus SHARPE, Cat. Birds Brit. Mus. (1896), 24, 223; 



Hand-List (1899), 1, 153; MCGREGOR and WORCESTER, Hand-List 



(1906), 23. 

 ffigialitis mongolica GRANT, Ibis (1896), 126. 



Basilan (McGregor) ; Batan (McGregor) ; Bohol (Everett) ; Cagayancillo (Mc- 

 Gregor) ; Calayan (McGregor) ; Cebu (McGregor) ; Cuyo (McGregor) ; Leyte 

 (Everett)-, Lubang (McGregor)', Luzon (Whitehead, McGregor); Mindanao 

 (M earns) ; Mindoro (Porter) ; Negros (Bourns & Worcester) ; Palawan (Platen, 

 Whitehead) ; Ticao (McGregor). Northern Asia, south in winter to China, Malay 

 Archipelago, and Australia. 



"Adult in breeding plumage. Similar to 0. geoffroyi, but smaller, bill 

 and tarsus much shorter; a broader black line along sides of face; ear- 

 coverts entirely black; the white throat separated from the rufous chest- 

 band by a narrowly indicated line of black. 'Bill black; feet somewhat 

 bluish black, toes darker; iris dark brown.' (Stejneger.) Length, 190; 

 culmen, 19; wing, 127; tail, 53; tarsus, 30. 



"Adult female in summer plumage. Similar to the male, but less richly 

 colored; rufous chest-band never so pronounced; facial markings less 

 developed, the black bands on the forehead often obsolete. 'Bill black; 

 feet dark gray, with an olive tinge ; toes darker, blackish ; iris dark hazel.' 

 (Stejneger.) Length, 178 ; culmen, 20 ; wing, 140 ; tail, 47 ; tarsus, 30. 



"Adult in winter plumage. Differs from the summer plumage in 

 wanting the facial markings and the rufous chest. Very similar to the 

 winter plumage of 0. geoffroyi, and distinguished chiefly by its smaller 

 size, shorter bill, and shorter tarsus ; there is also a little more brown on 

 the ear-coverts. 



"Young. Similar to the adults in winter plumage, but darker brown, 

 all the feathers edged with sandy brown ; eyebrow, sides of face, and under 

 surface of body with a strong tint of sandy buff. 'Bill, angle of mouth, 



