68 BULLETIN 98, UNITED STATES NATIONAL MUSEUM. 
Nearly adult male (type), No. 170972, U.S.N.M.; Pulo Siantan, 
September 8, 1899. 
Immature male, No. 170971, U.S.N.M.; Pulo Siantan, September 
5, 1899. 
Juvenal female, No. 170973, U.S.N.M.; Pulo Siantan, September 
9, 1899. 
Juvenal female, No. 171006, U.S.N.M.; Pulo Mobur, August 26, 
1899. ‘Bill horn brown, orange beneath at base.” 
Unfortunately neither of our two males is fully adult; but the 
plumage of the lower parts, in the type particularly, is practically 
complete; while there are enough new slate blue feathers of the 
adult plumage on the upper surface to show the difference in color 
between the Anamba birds and those from the Malay Peninsula. 
The contrast between the females, both adult and young, of these 
two races is even more striking. The present form is, by reason of 
its much paler throat and upper surface, still more different from 
Dicaeum trigonostignum antioproctum Oberholser,! of Simalur Island; 
Dicaeum trigonostigmum lyprum Oberholser,’ of Nias Island; and 
Dicaeum trigonostigmum melanthe Oberholser,’ of Pulo Lasia, western 
Sumatra. 
Both of the males (the type, No. 170972, U.S.N.M., September 8, 
and No. 170971, U.S.N.M., September 5) are molting from the juvenal 
into the adult plumage, the former specimen with this molt about 
three-quarters complete; the latter with about a third part of the 
adult orange and a third of the adult blue-gray feathers of the lower 
parts, but with only a few scattered adult feathers in the plumage of 
the upper surface, wings, and tail, which are still in juvenal livery. 
The juvenal plumage of the male is practically like that of the adult 
female. One of the juvenal females (No. 171006, U.S.N.M., August 
26) is in complete juvenal plumage, and shows no evidence of molt. 
In this stage the anterior lower parts are darker, duller, more slaty 
than in the adult. The other female (No. 170973, U.S.N.M., Septem- 
ber 9) is about a third molted into the adult plumage, all but most 
of the lower surface of the body being still in juvenal livery. 
Doctor Abbott reported this species common on Pulo Siantan, 
August 19 to September 6, 1899; also on Pulo Jimaja, September 
17-28, 1899; and he observed it on Pulo Mata, August 24 to Septem- 
ber 1, 1899; and on Pulo Telaga, September 14-15, 1899. 
Although none of our specimens are entirely adult, they seem to be 
nearly or quite full grown. Their measurements are as follows: 
1 Oberholser, Smiths. Mise. Coll., vol. 60, No. 7, Oct..26, 1912, p. 21. 
— exten athasetalel 
