70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO7 



There are only slight differences among the measurements of 

 starlings from Guam and Rota and from Saipan and Tinian. The fol- 

 lowing measurements include those of specimens from the collections 

 of the United States National Museum and the American Museum of 

 Natural History. The birds from Saipan and Tinian have a slightly 

 longer wing and a slightly thicker bill than birds from Guam and Rota. 



On Guam and Rota, this starling was one of the most abundant 

 birds observed. It was found in both jungle and open country. There 

 was evidence of nesting at Guam during the spring and summer. 

 Nests were found in tree hollows and in cliff holes. On June 2 a nest 

 was examined in a cavity of a banyan tree about 12 feet from the 

 ground. It was made of green leaves and twigs and contained two 

 eggs, partly incubated. The eggs are pale "Niagara green" with 

 scattered, irregular spots of color, near "russet," "Mars brown," and 

 "pallid purple-drab," most abundant near the large ends. Measure- 

 ments are 32.1 by 22.1, and 32.0 by 22.4. 



Adult birds in molt were collected in most of the months from 

 February to November at Guam. Weights of Guam birds are : 6 adult 

 males 84-96 (87), 8 adult females 78-108 (86), 2 juvenile males 88 

 and 90, and 5 juvenile females 77-87 (80). Weights of Rota speci- 

 mens are: 2 adult males 70 and 83, and 5 juvenile males 64-80 (76). 



APLONIS OPACUS ANGUS Momiyama 



Aplonis opaca anga Momiyama, Birds of Micronesia, 1922, p. 6. (Toroas, Ruk 

 Island, Middle Carolines.) 



Truk Islands: Moen Island — i juvenile male, December 13. Ulithi 

 Atoll: Pau Island — i juvenile female, August 21; Losiep Island — 

 I male, August 22 ; Mangejang Island — i female, August 20 ; Potan- 

 geras Island — 8 males, 4 females, 4 juvenile males, 3 juvenile females, 

 August 15, 16; Fassarai Island — 3 juvenile males, 2 juvenile females, 

 August 19. 



There appears to be very little difference between the birds from 

 the southern Marianas {A. o. giiaini) and the birds from Ulithi and 



