Page 471, 
242 ON THE AUSTRALIAN BUSTARD. 
Whereas Carpophaga possesses the ambiens muscle, an oil-gland, a 
gall-bladder, and no intestinal ceca. 
In Ianthenas leucolema the ambiens muscle and the oil-gland are 
present, as are the intestinal ceeca.* The gall-bladder isabsent. This 
bird must therefore, together with Columba, Turtur, Macropygia, and 
Ectopistes, be placed in the Columbine and not in the Carpopha- 
gine division. The intestines are 47 inches in length, of average 
diameter; and the gizzard is typical in structure, having simple 
plicated pads. 
Erythrenas pulcherrima.—This species is truly Ptilopine in all 
its characters. As in Ptilopus, the ambiens muscle is wanting, as 
are the ceca to the intestine. The gall-bladder is present; and the 
oil-gland is very small. The gizzard presents the peculiarities of 
that genus, although the four pads are not so regularly constructed, 
minor plications existing. There are 14 rectrices; and the intestines 
(which are capacious, as in all fruit-eating birds) are 16 inches in 
length. 
37. ON THE “SHOWING-OFF” OF THE AUSTRALIAN 
BUSTARD (EUPODOTIS AUSTRALIS). 
WuetHER the account of the production of great distention of the 
neck in the male Australian Bustard which follows will in any way 
simplify the question of the presence or absence of a gular pouch in 
Bustards generally, is doubtful. At all events it will rectify an ac- 
cepted error, and add a fresh fact to the considerable literature of the 
subject. 
In the “ Proceedings” of this Society for 1868 (p. 471 et seq.), 
Dr. Murie pictures the sexual “ show off” in a specimen of Hupodotis 
australis which was presented to the Society in April 1866, by the 
Acclimatization Society of Sydney, and infers, from its appearance, 
that, as an undoubted fact, the gular pouch is present in this specimen 
of the species at least. 
In 1873, during one of the months in which it was “ showing off,” 
namely in May, 1 examined the mouth of this identical bird while 
* These are extremely slender, and require special precautions to be taken for 
their demonstration. 
+ “Proceedings of the Zoological Society,” 1874, pp. 471-3. Read, June 16, 
1874. 
