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CERTHIADA.— SITTIN &. 517 
middle and hind toes, which are of equal length. 
Lateral toes unequal, the inner shortest, and both 
_ (typically) cleft to the base. Hinder claw very 
large ; and all the rest fully curved. 
A. subcristata. Sw. Braz. Birds, pl. 81. 
Zenoprs, Illiger. (fig. 74. Vol. I. p. 137.) Bill short ; 
the culmen very straight ; but the commissure, and 
particularly the under mandible, curving upwards. 
Wings rather lengthened, rounded. Tail moderate, 
rounded, slightly stiff; the feathers obtusely pointed. 
Tarsus very short. Middle and hinder toes longer 
than the tarsus; lateral toes unequal, the inner 
shortest, and both slightly connected at their base ; 
hinder toe shorter than the middle; its claw shorter 
than the toe. The fissirostral type. 
Z. genibarbis. Zool. Ill.i. pi. 100. 
Susram. SITTINA. Nuthatches. 
Bill very straight, more or less cylindrical. Wings 
long, ‘pointed ; the first quill hardly shorter than the 
second. Tail very short. Hind toe as long as the 
middle. The fissirostral division. 
SITTELLA, Sw. Bill very straight; the gonys curving 
upwards ; the sides greatly compressed: tip of the 
upper mandible distinctly notched. Wings longer 
than the tail. Tail very short, even. Feet large, 
resembling those of Sitta. Australia. 
S. chrysoptera. Lath. Supp. 2. pl. 127. 
Grosirra, Sw. (fig. 283.) Bill longer than the yong 
trigonal at the base, cy- 
lindrical beyond. Cul- 
men rounded. The tip 
of the upper mandible 
- entire, broader than 
high, and slightly bent 
over the lower. Wings 
long, pointed; the 
first quill nearly equal to the second and third, which 
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