278 GREEN HERON. 
Length to end of tail 173 inches, to end of wings 173, to end of claws 
24, to carpal joint 114; extent of wings 27 ; wing from flexure 135 
tail 32 ; bill along the ridge 2}, along the edge of lower mandible 33 ; 
bare part of tibia 1; tarsus 2; hind toe {, its claw 4; middle toe 1, 
its claw % ; inner toe 1%, its claw } ; outer toe 1§, its claw 1. Weight 
74 02. 
The Female is considerably smaller, but otherwise similar. 
Length to end of tail 17 inches, to end of wings 17, to end of claws 
212; extent of wings 25. Weight 6} oz. 
Young fully fledged. Plate CCCXX XIII. 
The bill dull greyish-green, the lower mandible lighter ; bare space 
around the eye greenish-blue, with the exception of a streak of yellow at 
the upper part. Iris yellow. Feet greenish-yellow, duller than in the 
adult. The hind neck light brownish-red, the fore part of the neck 
and all the under parts white, longitudinally streaked with brownish- 
red, some of the long feathers on the sides of the neck also white. At 
this age there are no elongated feathers on the back, which is greenish- 
blue, as well as the scapulars, and tail-feathers. Wing as in the adult, 
but the smaller feathers on its anterior part more red, the coverts with a 
small triangular tip of white, and the quills narrowly tipped and mar- 
gined with the same. 
Length to end of tail 173 inches, to end of wings 17, to end of claws 
23 ; extent of wings 25. Weight 63 oz. 
The roof of the mouth is anteriorly a little concave, with a median 
prominent line ; the palate convex ; the lower jaw with a kind of joint 
about an inch trom the base, its intercrural membrane or skin very ex- 
tensile. The tongue is 17% inch long, very slender, trigonal, emarginate 
at the base, with a groove along the middle, and pointed. Posterior aper- 
tures of nares linear, $ inch long. Esophagus, a, 4 c, 10 inches long, 
its walls delicate, its diameter at the upper part 1} inch, gradually con- 
tracting to } inch at its entrance into the thorax. The lobes of the liver 
unequal, the right 1 inch 5 twelfths long, the left 11 twelfths ; the gall- 
bladder large, 7 twelfths long. The stomach, c, d, is membranous, of an 
oblong form, 9 twelfths long, 10 twelfths in breadth ; its tendons ellip- 
