ERYTHROTRIORCHIS DORIvE. 
Marquis Doria’s Goshawk. 
Megatriorchis dorice, Salvad. & D’Albert. Ann. Mus. Civic. Genov, vii. p. 805 (1875). — Gurney, Ibis, 1877, p. 436. 
— Id. Ibis, 1878, p. 87. — Salvad. Orn. Papuasia e delle Molucche, i. p. 41 (1880). — Gurney, List of 
Diurnal Birds of Prey, p. 45 (1884). 
Erythrotriorchis dorice, Sharpe, Journ. Linn. Soc., Zool. xvii. p. 406 (1884). 
This is one of the finest discov'eries made by the celebrated Italian traveller D’Albertis during his voyage to 
South-eastern New Guinea, and it is one of the peculiar forms which inhabit both that great island and 
Northern Australia. 
The original specimen came from Hall Bay, in South-eastern New Guinea, and this is the bird which 
forms the principal figure in the Plate, and which we consider to be immature. The second specimen 
figured in the Plate is apparently a fully adult bird, and was obtained by Mr. Goldie on the Astrolabe 
Mountains in South-eastern New^ Guinea. We believe it to be an adult male, and the type to be an immature 
female, notwithstanding some discrepancies in the proportions of the quills and tail-feathers exhibited by 
the two specimens. If we are correct in thus assigning the relation of these two individuals, then it is 
evident that the genus Megatriorchis is the same as the Australian genus Erythrotriorchis, of which E. radiatus 
is the representative species on the latter continent. A larger number of specimens is, however, requisite 
to settle the point satisfactorily. 
The following are exact descriptions of the two specimens referred to : — 
Adult. General colour above glossy black, with nearly obsolete rufous margins to the feathers of the 
upper surface; W'ing-coverts black, very plainly and broadly edged with chestnut; bastard-wing and 
primary-coverts black, with indistinct bars of ashy brown, nearly obsolete on the bastard-wing ; quills black, 
barred across w'ith brown, these bars less distinct on the inner w'ebs ; tail-feathers black, barred with ashy 
grey, about twelve bars being discernible on the central feathers ; the outer tail-feathers with about the same 
number of brown bars, as well as one at the tip ; crown of head uniform black, the nape crested ; feathers 
below the eye and ear-coverts black, the feathers edged with rufous buff, imparting a streaked appearance; 
cheeks and throat rufescent buff, streaked with black down the centre of the feathers ; remainder of under 
surface white, broadly streaked with black, and marked slightly with chestnut, especially on the sides of the 
body; the black bars rather broken up and in the form of large spots on the flanks, abdomen, and under 
tail-coverts ; thighs broadly barred with black and white, with a chestnut spot in the centre of the black 
bars ; under wiiig-coverts black in the centre, rufous or rufous white on the edges ; the lower series 
blackish, barred with ashy or greyish white like the lower surface of the quills. Total length 20 inches, 
culmen 1‘05, wing 12‘8, tail 10‘0, tarsus 3T. 
Immature. General colour above brown, regularly barred across witli lighter brown, the edges of the 
feathers rather more rufous or fawn-coloured ; head brown, streaked with rufous, the feathers edged with 
this colour and having creamy white bars ; broad eyebrow of white feathers streaked with black ; a small 
crest of pointed plumes; nape-plumes white, with a rufous tinge, and mesially streaked with black; hind 
neck like the back, but more mottled with black spade-sliaped terminal spots to the feathers ; wing-coverts 
ashy brown, tipped with fawn-colour, and broadly barred across with darker brown ; quills ashy brown, 
broadly barred across with blackish brown for their entire length, the interspaces on the secondaries lighter, 
these quills being much paler tipped ; upper tail-coverts and tail-feathers ashy brown, tipped with greyish, 
slightly tinged with rufous on the former, the tail-feathers crossed with twelve bars of blackish brown ; sides 
of face and ear-coverts white, the feathers mesially streaked with dark brown, the ear-coverts tipped with 
blackish brown, forming a distinct patch ; under surface of body creamy white, streaked with dark brown, 
very narrowly on the throat, broader on the abdomen and lower breast, the thighs and under tail-coverts 
with nearly obsolete mesial streaks ; fore neck and breast broadly streaked with light rufous, browner on the 
former, the breast-feathers with a shaft-streak of dark brown ; under wing-coverts and axillaries white, with 
a dark brown shaft-streak ; quills ashy below, white near the base, barred with dark brown, the bars about 
nine in number: “bill black, the cere and eyelids ash-colour; feet whitish grey; iris chestnut-brown ” 
{U Albertis'). Total length 7‘5 inches, culmen \‘7 , wing I3'7, tail 12'8, tarsus 3'4. 
The principal figure in our Plate is drawn from the type specimen, Megatriorchis dorice, which w'as kindly 
lent to me by the Marquis Doria. The hinder figure is taken from the specimen in the British Museum, 
which we have identified as the adult male of the species. 
[R. B. S.] 
