ly 21, 1962, MCT 2633; [Female], 146.4
gm., heavy molt, July 21, 1962, MCT 2634; [Female], April 29, 1963, ADG
83.

At the Cocoa Research Station this common bird perched in dead
trees in the cocoa. On several evenings in September, an individual
was seen catching insects in flight at dusk, repeatedly returning
to a stump between forays. This continued until it was so dark that
I could barely discern the bird.

_=Berenicornis comatus=_ (Raffles): White-crested Hornbill.--A pair was
seen feeding about 150 feet up in a tree at the Cocoa Research Station.
No other was seen in northern Borneo.

_=Annorrhinus galeritus=_ (Temminck): Bushy-crested Hornbill.--This
hornbill was seen only on October 3, 1962, at the Cocoa Research
Station, when a flock of five flew overhead.

_=Aceros leucocephalus=_ (Vieillot): Wrinkled Hornbill.--On October 3,
1962, a pair was seen in the primary forest at the Cocoa Research
Station.

_=Aceros undulatus undulatus=_ (Shaw): Wreathed Hornbill.--_Specimens_,
2: Cocoa Research Station: [Female] largest ovum 5 mm., October 2, 1962,
MCT 2981; [Male] testis 10 x 11 mm., October 2, 1962, MCT 2982.

This, the most common hornbill at Quoin Hill and at Kalabakan,
occurred in primary forest.

_=Anthracoceros malayanus=_ (Raffles): Black Hornbill.--A flock of five
was seen at the Cocoa Research Station rest house on September 6 and 13,
1962.

_=Buceros rhinoceros=_ Linnaeus: Rhinoceros Hornbill.--It was fairly
common at the Cocoa Research Station, where several were observed in
July and August.

_=Rhinoplax vigil=_ (Forster): Helmeted Hornbill.--The Helmeted Hornbill
was rarely observed, but almost every day we heard its call when we were
on the east coast. It was also heard in the forest on the west coast
around Tenom, but is not common there owing to hunting by the natives.
Skulls of this and the preceding species were on sale in a shop at
Tenom, despite laws prohibiting the killing of these species.

_=Calorhamphus fuliginosus tertius=_ Chasen and Kloss: Brown
Barbet.--_Specimens_, 7: Cocoa Research Station: [Female] largest ovum 2
mm., 38.8 gm., brood patch, July 7, 1962, MCT 2610; [Female], 40.0 gm.,
August 1, 1962, MCT 2702; [Female], 44.8 gm., August 1, 1962, MCT 2703;
[Male] testis 5 x 3 mm., September 25, 1962 (paired with MCT 2956), MCT
2955; [Female], September 1, 1962, MCT 2846, [Female], September 25,
1962, MCT 2956; [Female]?, November 30, 1962,