ey ! 
GREEN HERON. 279 
tical, 5 twelfths by 3 twelfths. The proventriculus, cc, 9 twelfths long, 
with a complete belt of oblong glandules. me Bp —| 
5 BSS 
There is a small roundish pyloric lobe e. = 
Intestine, fg, 2 feet 11 inches long, its 
diameter uniform, 1 twelfth, or about the 
thickness of a crow’s quill. Rectum en- 
larged to 3 twelfths, and 3; inches long, 
its ccecal extremity rounded, and only one- 
twelfth long. 
The trachea is 71 inches long, of near- 
lyuniform diameter, averaging 2 twelfths; 
the rings 160, nearly circular and ossified. 
The bronchial half-rings about 18. The 
lateral muscles are very inconspicuous ; 
sterno-tracheals ; and a pair of inferior 
laryngeal, going to the first b onchial 
rings. 
The Herons generally differ from the 
other Gralle in having the cesophagus - 
much wider and similar to that of the 
fish-eating palmipedes; the stomach in 
a manner membranous, like that of the ra- 
pacious land-birds, without lateral muscles 
or strong epithelium ; the intestine ex- 
tremely slender, and the anterior extre- 
mity of the large intestine or rectum fur- 
nished with a single ccecum, in place of two, as in almost all other 
birds. 
