LARItVE. 
Chlidoniai leucoptera grim (Horsf,}. J 
Sterna grisea Horsfield, Trans. Linn. Soc. xiii, 1821, p. 199: Java. 
Uistr. — Malay Peninsula {West Coast). 
Sumatra (Straits of Malacca). 
Borneo. 
Java. 
Child on i as hybrids (Pali.). Whiskered Tern. 
[Chlidonias hybrids hybrids (Pall.). 
Sterna hybrida Pallas, Zoogr. Rosso-Asiat. ii, i8ix t p. 338 : Russia 
D is t r . — E xtra -1 i m i tal . ] 
Chlidonias hybrida javanica (Horsf,). * * 3 
Sferna javanica Horsfield, Trans. Linn. Soc. xiii, t&2i f p. 198: 
Java. 
Distr. — Borneo. 
Java. 
Genus GELOCHELIDON Brehm. 
Gelochelidon nilotica (Gmel.). Gull-billed Tern. 
[Gelochelidon nilotica nilotica (Gmel.). # 
Siema nilotica Gmelin, Syst. Nat. i, pt. 2 , 1789, p, 606: Egypt. 
Distr, — Extra -1 imital. ] 
Gelochelidon nilotica afhnis ( Horsf. 1. 
Sterna ajftnis Horsfield, Trans. Linn. Soc. xiii, 1821, p. 199: Java. 
Distr. — Malay Peninsula. 
Sumatra. 
Borneo; Natuna Islands. 
Java. 
Genus STERNA Linn. 
Sterna hinutdo Linn. Common Tern. 
[Sterna turunda hirundo Linn. 
Sterna Hirundo Linn., Syst. Nat. 10th ed. 1758, p. 137 : Sweden, 
Distr, — Extra -lim ital . ] 
Sterna birundo longipennis Nordtn.a Nordmattn's Tern. 
Sterna longipennis Nordmann in Erman’s Verz. Thieren u. 
PJftanzen, 1835, p. 17: Ochotsk, Siberia. 
Distr. — Malay Peninsula (both coasts). 
Sumatra. 
Java; Borneo. 
* We have only recognized an eastern race for this tern after much 
hesitation. 
s “//. hybrida " has been recorded from Nias by Rosenberg. 
3 Records of fiuviatilis { — hirundo}, and tibetana from Malaysia all 
seem to apply to this form : a specimen has been examined from Sarawak. 
