ARDEIDj€. 
Genus IXOBRYCHUS Billberg. 
lxobrychus sinensis 1 (Gmel.). Yellow Bittern* 
Ixobrydhus sinensis sinensis (Gmel.). 
Ardea Sinensis Gmelin, Syst. Nat. i, pt. 2 , 1789, p. 642: China. 
Ardea left da Horsf., Trans. Linn. Soc. xiii, 1821, p. igo : Java. 
Di,s£r. — Malay Pensinsula. 
Sumatra; Nias Island, West Sumatra; Billiton. 
Borneo; Natuna Islands. 
Java; Bali; Karimon-Java Islands. 
lxobrychu* cinnamomeus (Gmel. ) . Chestnut Bittern 
Ixobrychu* cinnamomeus cinnamomeus (Gmel.). 
Ardea ctnnaniomea Gmelin, Syst. Nat. i, pt. 2, 1789, p. 643* China. 
Ardea nebulosa Horsf., Trans. Linn. Soc. xiii, 1821, p. jgo : Java. 
Botaurus assimilis Brebm, Isis, 1842, p. 5B2 : Java. 
Distr. — Malay Peninsula. 
Sumatra, 
Borneo. 
Java; Bali; Kangean Islands. 
Ixobrycbus eurhythmus (Swinh.). Schrenck’s Bittern. 
Ardetta eurkytkma Swinhoe, Ibis, 1873, p. 74, pi. 2: Amoy, South 
China. 
Distr . — Malay States. 
Sumatra. 
Borneo. 
Java; Mata Siri Island, Java Sea; Karimon-Java Islands. 
Genus DUPETOR Heine and Reichenow. 
Dupetor flavicollis (Lath.). Black Bittern. 
Dupetor flavicollis flavicollis (Lath.). 
Ardea flavicollis Latham, Ind. Dm. ii, 1790, p. 701 ; India. 
Ardea fieata Raffles, Trans. Linn, Soc. xiii, 1812, p, 326: Sumatra. 
Ardea biltneata Less., Traits d’Om. 1831, p, 574 ; Java. 
Distr , — Malay Peninsula. 
Sumatra; Nias Island, West Sumatra. 
Borneo. 
Java. 
1 Revision : Oberh., Bull. U.S. Nat. Mus. 159, 1932, p. 17, 
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