OF THE KAGU, SUN-BITTERN, AND BOATBILL. 491 
Boatbill, or, if they exist in the latter, are so minute as to escape observation. The 
glands in question are representatives of thyroid bodies. Each in the Kagu (fig. 17, 
T.Gl) is about 0°4 inch diameter, soft, subspherical, and lies outside the bronchus and 
bronchio-tracheales muscles. 
The arterial divisions of the aorta so pass upwards, alongside, and behind them as to 
simulate their entering the thyroid body, which in reality they do not. 
Accommodating themselves to the shallower and shorter pelvo-sacral depressions, the 
kidneys in all three avine species are of moderate size. In the Kagu each renal organ 
(1°6 inch long and 0-6 inch in widest diameter) has a figure-of-eight shape, the anterior 
lobal extremities being connected by a glandular bridge 0-3 inch across. In Eurypyga 
they seem divided into three lobes, the anterior one largest and less sunk than the 
hinder ones. This disposition obtains in Cancroma, the front oval-shaped superficial 
lobe pointing outwards. 
DESCRIPTION OF THE PLATES. 
PLATE LVI. 
Fig. 1. Distribution of the powder-down patches in the Kagu (Rhinochetus jubatus). 
Profile view of the body; the wing and leg severed, and the body disrobed 
of all feathering, excepting that yielding the powder-down. Reduced to 
% nat. size. In this and two subsequent figures the powder-down patches 
are designated as follows :— 
C.N*. Cranio-nuchal head patch. 
C.N". Cranio-nuchal nape patch. 
C.N*, Cranio-nuchal throat patch. 
I.N. Lateral neck-patch. 
D*. Dorsal scapular patch. 
D'. Dorsal lumbar patch. 
D'. Dorsal iliae patch. 
DY. Dorsal caudal patch. 
C.V*. Carino-yentral sternal patch. 
C.V*. Carino-ventral abdominal patch. 
C.V°. Carino-ventral cloacal patch. 
H’, Humeral brachial patch. 
H, Humeral azillary patch. 
HH’, Humeral cubital patch. 
HH”, and H*. Humeral (anterior and 
posterior) alar patch. 
F, Femoral patch. 
Co. Coracoid. 
Co’, Coracoid furcular patch. 
C.L. Costo-thoracic patch. 
L.S.V?, Lateral sterno-ventral pectoral 
patch. 
L.S.V%, Lateral sterno-ventral gastric 
patch. 
Fig. 2. Dorsal view of the powder-down patches of the same bird. Lettering as men- 
tioned above. Og, oil-gland. 
Fig. 3. Ventral aspect. The tongue removed, so as to exhibit roof of mouth, palatal 
cleft, and appendages. Lettering corresponding to that of figs. 1 and 2. 
