TRERON. 
bo 
Ort 
Genus TRERON Vieillot, 1816. 
This genus differs from the other green pigeons in haying the horny 
portion of culmen extending back to frontal feathers ; a small naked area 
around eye; pattern and colors of the plumage very similar to those of 
Osmotreron axillaris. 
1l. TRERON NIPALENSIS (Hodgson). 
THICK-BILLED GREEN PIGEON, 
Toria nipalensis Hopeson, As. Research (1836), 19, 164, pl. 9. 
Treron nipalensis SALVADoRI, Cat. Birds Brit. Mus. (1893), 21, 34; SHARPE, 
Hand-List (1899), 1, 53; OATES, Cat. Birds’ Eggs (1901), 1, 82; Mc- 
GREGoR and WorcESTER, Hand-List (1906), 9. 
Treron nasica STEERE, List Birds and Mams. Steere Exp. (1890), 24. 
Mindoro (Steere Exp., Bourns & Worcester) ; Palawan (Steere, Everett, White- 
head, Platen, Steere Exp., Bourns & Worcester, Celestino, White). Nepal to 
Burma, Malay Peninsula, Siam, Cochin China, Tenasserim, Borneo, 
Adult male.—Crown ashy, forehead lighter; face and neck dark gray, 
the latter followed by a narrow line of ashy gray; mantle, including 
lesser wing-coverts, dark chestnut; lower back, rump, and _ tail-coverts 
dark green; under parts yellowish green, breast more yellowish; thighs 
and flanks darker and greener, mixed with white; under tail-coverts 
cinnamon; wings black; median and greater wing-coverts and secondaries 
edged with yellow; some of the inner secondaries tipped with green; tail 
above, ashy gray with a black band some distance from the tip, but the 
median rectrices green and the next two partly green. “Legs and feet 
vary from lake-pink to coral-red ; orbital skin pea-green; the irides vary 
from bright orange to yellowish red, with an inner, deep-blue ring more 
or less apparent; gape and base of upper mandible to nostril bright red ; 
rest of bill pale yellowish, or greenish white, tipped with greenish.” 
(Hume.) Two males from Palawan measure: Length, 250, 260; wing, 
132, 136; tail, 89, 87; culmen from base, 20, 21; tarsus, 19.8, 20. 
Adult female.—Differs from the male in having the mantle dark green 
like lower back; under tail-coverts buffy white with large pointed shaft- 
marks of dark green. A female from Palawan measures: Length, 250; 
wing, 130; tail, 84; culmen from base, 20; tarsus, 20. 
“Two females measure: Length, 210; culmen, 20; wing, 130; tail, 74; 
tarsus, 20; middle toe with claw, 29. Iris with outer orange and inner 
brown ring; bill yellow, red at base of lower mandible.” (Bourns and 
Worcester MS.) 
