NO. 15 BIRDS OF THE PACIFIC WAR AREA BAKER "/^ 



sexed, July 12, 18; Agaiia Swamp — 4 males, 2 females, 3 unsexed, 

 June 2, 3, 25, October 8 ; Pago River — i male, July 23 ; Agat — 

 I male, July 26. 



At Guam, the white-eye appeared restricted to certain areas on the 

 island. Birds were taken at five localities, where they were found in 

 small groups moving about in low trees. No evidence of nesting 

 activity was found although three males taken in June and July had 

 enlarged testes. It is possible that nesting may be concentrated in the 

 winter and spring months, though Scale (Occ. Pap. B. P. Bishop 

 Mus., vol. I, 1901, p. 58) recorded three nests apparently found in 

 May, June, or July. Hartert (Nov. Zool., vol. 5, 1898, p. 57) 

 recorded several nests taken in February and March. Six specimens 

 taken in June and July were in molt. Weights of 11 adult males are 

 9.5-14.0 (10.5), of 3 adult females 8.0-10.0 (9.3). 



ZOSTEROPS CONSPICILLATA ROTENSIS Takatsukasa and Yamashina 



Zosterops sempcri rotensis Takatsukasa and Yamashina, Dobutsu. Zasshi, 

 vol. 43, 1931, p. 486. (Rota.) 



Rota Island: Sosan Isthmus — 2 males, i female, October 18, 20; 

 Mariiru Point — i juvenile male, i unsexed, October 22. 



I am following Stresemann (Mitt. Zool., vol. 17, 1931, p. 227) in 

 placing all the Micronesian bridled white-eyes in this one species. 

 It is evident, however, that these races fall into rather distinct groups. 

 Zosterops c. conspicillata at Guam and Z. c. saipani Dubois at Saipan 

 and Tinian have a pale chin and throat, a light-colored fronto-loral 

 band, which is very well marked in the form at Guam, and a broad 

 white orbital ring. Z. c. rotensis from Rota, Z. c. semperi from the 

 Palaus, Z. c. owstoni from Truk, and Z. c. takatsukasai Momiyama 

 from Ponape have a bright yellow chin and throat, matching the rest 

 of the underparts, an obscure fronto-orbital band narrowly tinged with 

 yellow, and a small white orbital ring. Z. c. hypolais Hartlaub and 

 Finsch appears, from a study of the original description, to fall into 

 another group, but no specimens are available for examination. 



At Rota, white-eyes were numerous. The specimens collected 

 were in molt. 



ZOSTEROPS CONSPICILLATA SEMPERI Hartlaub 



Zosterops semperi Hartlaub, Proc. Zool. Soc. London, 1868, p. 117. (Pelew 

 Islands.) 



Palau Islands: Garakayo Island — 2 males, i female, i unsexed, 

 September 18, 19. 



