8 PEOCEEDIIS'GS OF THE NAT102TAL MUSEUM vol. 77 



7. CALOENAS NICOBARICA (Linnaeus) 



ColumM nico'barksa Linnaeus, Sys. Nat., ed, 10, 1758, p. 164 (Nicobar Islands). 



One female, Piilo Maratua (a captive bird brought to Borneo from 

 the above island, July 6; in rather bad plumage). 



Family CHARADRIIDAE 



PLOVERS 

 8. CHAKADRIUS LESCHENAULTII Lesson 



Charadrius leschenaultii Lesson, Diet. Sci. Nat. (Levrault), vol. 42, 1826, p. 36 

 (Pondicherry, India). 



One female, Pulo Bakungan, May 17. 



9. CHARADRIUS MONGOLUS Pallas 



Charadrius mongolus Pallas, Reise Russ. Eeiclis, vol. 3, 1776, p. 700 (Mon- 

 golia). 



One male, Pulo Bakungan, May 17. 



Family ARDEIDAE 



HERONS 



10. TYPHON SURL4.TRANUS SUMATRANUS (Raffles) 



Ardea siimatrana Raffles, Trans. Linn. Soc. London, vol. 13, pt. 2, 1822, p. 325 

 (Sumatra): 



One immature female, Pulo Derawan, July 23. 



11. DEMIGRETTA SACRA (Gmelin) 



Ardea sacra Gmelin, Syst. Nat., vol. 1, pt. 2, 1789, p. 640 (Tahiti). 



Two males, two females, and one unsesed, Pulo Derawan, July 24 ; 

 one female, Pulo Bakungan, May 17; two males and two females, 

 Pulo Maratua, May 12 and 20; two males and five females, Pulo 

 Kaniungan Ketchil, April 3. 



Six of the above are adults in the dark phase; two immature in 

 the dark phase ; nine adults and immatures in the white phase. 



Two immature birds in the white phase are acquiring a few dark 

 centered feathers and evidently would eventually have acquired a 

 dark plumage. 



While the United States National Museum contains a good series 

 of this species, it lacks good material from the southern part of its 

 range, and I am unable, for the present, to ascertain the forms, if 

 any, into which it is divisible. 



Four adult males (dark phase) from islands off northeast Borneo 

 measure: Wing, 282-295 (287); tail, 94-98 (96.4); culmen, 83-87 

 (85); tarsus, 81-83 (81.9); middle toe, 54-55 (54.5). Two adult 

 females (dark phase) : Wing, 272-275; tail, 84.5-90; culmen, 78-79; 

 tarsus, 69-74.6 ; middle toe, 48-50.5. 



