COLUMEID&. 
Genus TRERON Vieillot. 
Treran curvirostra (Gmel.). Smaller Thick-billed Green Pigeon, 
Treron curvirottra curvirottra (Gmel.). 
Columba curvirostra Gmelin, Syst. Nat. i, pt. 2, 1789, p. 777, n. 45 : 
Tanna error = Selangor, Malay Peninsula {Rob. and Kloss, 1921). 
Treron nasica Schleg., Nederl. Tijd. Dierk i, 1863, p. 67 : Banjermasin, 
South Borneo. 
Distr. — South Peninsular Siam, Malay States, 
Sumatra (part); Rhio Archipelago; Banka; Billiton. 
Borneo; North Natuna Islands. 
Treran cur vi rostra nipalensis iHodgs.), 
Toria nipalensis Hodgson, Asiat. Res. xix, 1836, p. 164, pi, 9: 
Nepal. 
Distr. — Peninsular Siam (except extreme South); Langkawi and 
Butang Islands off west coast; islands of the Bandon Bight off the 
east coast of the Malay Peninsula. 
Treran curvirostra harterti Parrot. 
Treron nipalensis harterti Parrot, Abh. Kon. Bay. Akad. Wiss. xxiv, 
1907, p. 261 : Deli, North-east Sumatra. 
Distr . — Sumatra (North-east). 
♦Treron curvi rostra haliploa Oberll. 
Treron curvirostra haliploa Oberholser, Smith. Misc. Coll, lx, 7, 
1912, p. 4 : Sibabo Bay, Simalur Island, 
Distr. — Simalur Island, West Sumatra. 
♦Treron curvirostra pega Oberh. 
Treron curvirostra pega Oberholser, Smith. Misc. Coll, lx, 7, 1912, 
p, 4 : Siaba Bay, Nias Island. 
Dis tr. —Nias Island, West Sumatra, 
Treron curvirostra s mi era Oberh. 
Treron curvirostra smicra Oberholser, Smiths. Misc, Coll, lx, 7, 
1912, p. 3 ; Tana Bala Island, Batu Islands. 
Distr.— Batu Islands; Mentawi Islands (Sibenit and Sipora), West 
Sumatra. 
♦Treron curvirostra hypothapsina Oberh. 
Treron curvirostra hypothapsina Oberholser, Smith, Misc. Coll, lx, 
7, 1912, p. 3 : Engano Island. 
Distr. — Engano Island, West Sumatra. 
Kelapa Island, West Java.’ 
1 Racial identity not certain. 
