8, 1962, MCT 3363;
[Female], November 28, 1962, MCT 3364; [Male], November 28, 1962, MCT
3365; [Female], November 28, 1962, MCT 3366; [Female], November 29,
1962, MCT 3390; [Male] testis enlarged, November 29, 1962, MCT 3391;
[Female]?, November 29, 1962, MCT 3392; [Male], December 1, 1962, MCT
3393; [Male], December 2, 1962, MCT 3429; [Male], November 30, 1962, MCT
3442.

This bird was fairly common at Quoin Hill in the abaca and wild
bananas and, at Kalabakan, in primary forest. Its feeding habits
are the same as those of the preceding species. The order of
abundance of the spiderhunters is probably best shown by the number
of each species taken: _Arachnothera longirostris_, 58; _A.
affinis_, 27; _A. flavigaster_, 9; _A. chrysogenys_, 4; _A.
crassirostris_, 1.

_=Prionichilus xanthopygius=_ (Salvadori): Yellow-rumped
Flowerpecker.--_Specimens_, 7: Cocoa Research Station: [Male] testis 5 x
5 mm., 8.9 gm., August 23, 1962, MCT 2800; [Female] largest ova 3 mm.,
oviduct enlarged, 10.2 gm., September 13, 1962, MCT 2910; [Female] imm.,
9.7 gm., September 13, 1962, MCT 2911; [Male] testis 3 x 2 mm., 9.5 gm.,
September 13, 1962, MCT 2912; [Female] imm., 7.0 gm., September 14,
1962, MCT 2920; [Male] testis 6 x 4 mm., vas deferens enlarged,
September 26, 1962, MCT 2966; [Male], November 27, 1962, MCT 3344.

This species did not appear at Quoin Hill until August 23. The
gonads of most of the adults taken from that time on appeared to be
regressing from breeding condition, and several immatures were
taken also, suggesting that the breeding season was over. The birds
seemed to be attracted, with bulbuls, to the tree _Trema
orientalis_.

_=Prionichilus maculatus maculatus=_ (Temminck): Yellow-throated
Flowerpecker.--_Specimen_, 1: 12 mi. N Kalabakan: [Male], October 19,
1962, MCT 3094.

I observed this flowerpecker once at Quoin Hill, in much-disturbed
primary forest, but was unable to secure a specimen. Twelve miles
north of Kalabakan it was found in primary forest.

_=Dicaeum chrysorrheum=_ Temminck: Yellow-vented Flowerpecker.--I
observed one feeding about 50 feet high among epiphytic plants in the
moss forest 5.5 miles north of Tenom.

_=Dicaeum monticolum=_ Sharpe: Black-sided Flowerpecker.--_Specimen_, 1:
5.5 mi. SW Tenom: [Male] testis 5 x 3 mm., December 17, 1962, MCT 3449.

I saw this flowerpecker once, in the moss forest above T