340 MR. A. R. WALLACE ON THE BIRDS [Dec. 9, 
OrioLus FRONTALIS. (Pl. XL.) 
Flavo-aurantiacus ; corona occipitali latissima, alis caudaque ni- 
gerrimis ; dorso concolore ; remigibus ex toto nigris ; cauda elon- 
gata, rectricibus lateralibus plus minusve flavis, mediis duabus 
ex toto nigris vel puncto apicali flavo. 
Pure deep yellow, the black on the head leaving only a small 
frontal spot; wings entirely black, rarely showing a minute tip or 
edging of yellow; yellow on the tail beneath generally less than in 
O. acrorhynchos, diminishing regularly to the middle feathers, which 
are wholly black, or im some specimens show a yellow point on the 
extreme apex of the web; bill flesh-colour; feet plumbeous ; iris 
red. 
In the female the two middle tail-feathers are olivaceous yellow, 
the tertiaries olive-margined, and the primaries white-edged. A 
variety of the female occurs with the bill jet-black. 
Length 11°3 inches ; wing 6 inches ; tail 4? inches. 
Hab. Sula Islands. + 
This species is very like O. aerorhynchos of Manilla, but differs 
sufficiently in its richer and more uniform colour, longer tail, jet-black 
wings and. middle tail-feathers, and the smallness of the frontal 
yellow spot. 
ARTAMUS MONACHUS. 
Artamus monachus, Bp. Consp. p. 343, ex Temm. 
Albus, capite cinerea, alis caudaque fusco-plumbeis. 
Pure white ; head and neck ashy, with a warm purplish tinge ; 
lores blackish ; wings and tail ashy lead-colour, primaries blackish 
on the outer webs and towards the tips; under wing-coverts and 
base of wings and tail beneath white, shading into ash-colour; bill 
ale blue ; feet lead-colour. 
Total length 8 inches; wing 53 inches; tail 24 inches; bill, to 
gape, 13 inch. 
Hab. This fine species inhabits the mountain districts of N. 
Celebes, as well as the Sula Islands. 
HiruNDO JAVANICA. 
Hirundo javanica, Lath.; Temm. Pl. Col. 82. fig. 2. 
I have specimens of this bird from Sumatra, Borneo, Java, and 
Lombock, as well as the Sula Islands. It agrees well with Tem- 
minck’s figure, and scarcely differs from H. neowena, Gould, figured in 
the ‘ Birds of Australia,’ but in being darker on the under surface, 
and having a brassy tinge on the wings. 
Hab. Sula Islands and westward to Sumatra. 
MyIAGRA PUELLA. 
Cerulea ; dorso abdomineque ceruleo-cinereis ; ventre et caude 
tectricibus inferioribus albis, cinereo tinctis; alis caudaque 
cinereis, plumis ceruleo marginatis. 
