Fig. 
OF THE SOUTHERN APTERYX. 297 
DESCRIPTION OF THE PLATES, 
PLATE XLVII. 
. Head of a female Apterya'. 
a. The external nostril. 
. Head of a male Apteryz. 
a. The cere. 
b. The ear. 
. Head of a Rhea Americana. 
a. The cere. 
b. The ear. 
. The external appearance of the wing when the feathers are removed: it ex- 
hibits the form of one of the abnormal small quill-feathers described at 
p- 259. 
. One of the neck-feathers of the Apteryz. 
PLATE XLVIII. 
. Under surface of the head of the Apterya, with the tongue and palate exposed. 
R 
. The posterior nasal apertures. 
. The common opening of the Eustachian tubes. 
The tongue. 5 
. The glottis. 
. The glandular processes of the pharyngeal membrane. 
eo ace 
. The inferior surface of the tongue and hyoid-bone, with the commencement 
of the wsophagus and trachea. 
. Abdominal viscera in situ. 
a. Gastric processes of omentum. 
b. Omental processes covering the intestines. 
c,c. Omental processes in the intestinal loops. 
d. The pancreas, in 
e. The duodenal loop. 
f. The first loop of jejunum. 
g. The rectum. 
1 Since the preceding pages were printed Mr. Cunningham has transmitted to the Zoological Society the 
skin and the trunk of an Apteryzr, which proves to be a female, and has a beak measuring from the gape to the 
tip six inches four lines, thus verifying the conjecture put forth at p. 260, that the difference in the length of the 
beak is sexual, and that the longer one characterizes the female. 
VOL. II.—PART IV. 2R 
