Type: collector's No. 4983. Congo Exp. A. M. N. H. ad. Avakubi
Ituri District, Belgian Congo, August 13, 1913.

Description of Adult Male (type).—Throat, upper breast, lores and forehead
glossy wall-green, in certain lights with violet reflections; upper tail-coverts much
the same, but nape and back brilliant peacock-green. Lower breast, sides, belly,
and under tail-coverts bright scarlet-red; feathering of legs dusky, with faint green
gloss and slightly bordered with whitish. Primaries fuscous-black, the outer ones
margined with white and the inner ones white at the base. Alula and primary-coverts
blackish; lesser wing-coverts blackish, broadly margined with green; middle
coverts with less green and vermiculated with white. Greater coverts and secondaries
blackish vermiculated with white, the former narrowly edged with green, the
secondaries only very faintly. Three middle pairs of rectrices blackish, slightly
glossed with violet-blue and margined with green; outer three pairs white, with
bases black faintly glossed with blue, this blackish color extending out furthest on
inner webs, and finally breaking up into small dusky spots.

Iris red-brown; distal portion of bill light greenish gray, base of bill and two
[Pg 4]
naked patches beneath eye light cadmium-yellow, naked skin above eye lemon-yellow;
bare skin of foreneck (covered in life by plumage) light blue; feet pale pink.

Length (skin) 254 mm.; length of bill (culmen from base) 18 mm.; height of
bill at nostril 9.5 mm.; greatest width of maxilla, near gape, 16 mm.; wing (measured
with dividers) 113 mm.; tail 146 mm.

In some of the other male specimens the green borders on the secondaries are
lacking, and the exact intensity of the white vermiculation is of course variable.
The measurements of a series of 11 adult males are: bill, 17-18.5 mm.; wing, 108-115.5;
tail, 136.5-151. This is smaller than any Apaloderma heretofore described.

Adult Female. Crown, back, and rump brilliant peacock-green, upper tail-coverts
viridian. Lores, forehead, and ear-coverts more brownish; throat and
upper breast snuff-brown, sometimes with glossy green at sides of neck or a few
narrow green borders on the chest. Lower breast cinnamon, sometimes finely barred
with dusky; belly somewhat lighter and rosier than that of male; feathering of legs
dusky. Tail similar to that of male; but the vermiculation on the wing-coverts
and secondaries is very much finer, and light ochraceous-buff, not white.

Iris red-brown; naked cheek-patches lemon-yellow, base of bill slightly deeper
yellow; culmen dusky, bill light green below; feet flesh-color, claws gray.

Measurements of three adult females: bill (culmen from base), 17-17.5 mm.;
wing 104.5-113 mm.; tail, 140-149 mm.

An immature male has the green of the upper breast broken by irregular bars of
cinnamon. The lower breast is cinnamon mixed with rose, and barred at the sides
with green, and shades to light scarlet-red on belly and under tail-coverts. The
greater wing-coverts and three inner secondaries bear each a large spot of light
ochraceous buff, extending across the whole width of the innermost secondary, and
most of the secondaries are vermiculated or speckled on their outer webs with buff.
Just behind the eye there is a small spot of white, and the lower edge of the ear-coverts
is marked by a buff line.

Iris dark brown; maxilla dusky, but its base greenish-yellow like the naked cheek-patches,
mandible light yellowish-green, with light-gray tip; feet pinkish. Bill,
18.5 mm.; wing, 108; tail, 139.

A nestling (), with tail only 25 mm. long, is of a yellower green above (calliste
green); lores, forehead and entire underparts cinnamon-buff, the downy feathers
slightly tipped with dusky except on abdomen. The wing-coverts and inner secondaries
bear large spots of buff. Iris brownish-gray; bill very light bluish-gray, its
base and corners of mouth greenish-yellow; feet pale flesh-color, claws gray.

The spots on the inner secondaries, in the first plumage, appear to be much larger
in the case of A. minus than with A. narina, for an immature female specimen of
the latter shows only rounded spots on the outer webs not exceeding 5.5 mm. in diameter,
while the additional buffy speckling is practically absent.

Resembling Indicator in its bill and general form, save for the tail, which is composed
of 12 quills, the two middle pairs of nearly equal length, somewhat pointed and
curved strongly outwards, the next pair considerably shorter, but also pointed and
slightly curved; while the fourth, fifth and sixth are straight, greatly narrowed, and
stiffened, becoming successively shorter, so that the outermost pair is not half so
long as the median. The tail-coverts are unusually long, those below as long as the
longest rectrices, and projecting in the fork of the tail.

Description of type, collector's No. 5628, Congo Exp. A. M. N. H. ad.,
Avakubi, Ituri District, Belgian Congo. Apr. 17, 1914.

    Fig. 1. Tail of Ceriocleptes xenurus,

from below. Nat. size.

Feathers of forehead, crown, back, and rump blackish-brown, bordered or washed
with yellowish-citrine, those of nape and upper back whitish at the base. Sides of
head lighter, shading gradually to olive-buff on throat, breast, and sides; middle
of abdomen still lighter, ivory-yellow. Upper wing-coverts and secondaries fuscous-black
(freshly molted feathers blacker) narrowly edged with olive-ocher. Primaries
similar, but yellowish border almost entirely lacking; both primaries and secondaries
fading to pale olive-buff on their inner edges. Under wing-coverts colored like
the breast, but with faint dusky shaft-streaks. Feathering of flanks ivory-yellow,
with strong blackish median lines. Two middle pairs of rectrices dull blackish, 3rd
pair whitish, with a small blackish spot on the outer edge close to the tip, and a larger
concealed black spot on the inner web towards the base; the 3 remaining pairs of
[Pg 6]
rectrices white. The long median pair of under tail-coverts blackish, the next pair
similar, but margined with whitish, the remainder ivory-yellow with faint shaft-streaks
of dark brown. Upper tail-coverts
fuscous-black, bordered with amber-yellow.
[1]

The bill, nostril, and feet resemble those
of Indicator indicator, but the bill is somewhat
stouter, while the wings and tail are
shorter. The 9th (outer) primary is intermediate
in length between the 6th and 5th;
the 7th and 8th are longest.

Iris bright brown, naked edges of eyelids
grayish-brown; bill dusky-brown; feet dull
grayish-green.

Length (skin), 160 mm.; wing, 93.5; tail
56; bill (culmen from base), 13.5; metatarsus,
14.

Part I.—Republication of Descriptions of Lower Carboniferous Crinoidea from the Hall
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[Pg 8]
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