312 ON THE CLASSIFICATION oF BIRDS. 
Feet asin Bucco. Tail moderate, broad, even, 
Old World.* | 
Y. torquilla. Selby, pl. 38. f. 4. 
Oxyryncuus, Tem. Bill as in Yunz ; but the cul 
more, and the gonys less, curved. Wings lengthened 
pointed ; the first quill nearly as long as the second, 
with the outer web crenated. Feet short, insessorial. 
Lateral toes equal. Tail moderate, even. South 
America. 
O. cristatus. Zool. Ill. i. pl. 49. 
Famity CERTHIADZE. Creepers. q 
Bill much compressed, entire. Feet insessorial. Toes 
greatly developed, and generally united at their base; — 
the hinder always lengthened. Tail cuneated, rigid. — 
Susram. CERTHIANZ. True Creepers. : 
Bill generally curved, and greatly compressed. The ang 
terior toes more or ‘less united. Tail rigid, with t 
shaft projecting beyond the webs. The typical division 
i gee Linneus. (fig. 280. a, 6) Bill eng hone 
slender ; both mandibles envian entire. Wings rather 
lengthened ; the three first quills graduated ; the two 
next equal and longest. Tail lengthened, sraduatedl 
and divaricated; the feathers only slightly rigid 
lanceolate, and acutely pointed; the tips not very a 
Legs short, slender. The middle toe longest ; the 
inner much shorter than the outer; hinder toe long 
than the tarsus, the claw very long, and but slightly 
curved. All the claws very slender. The fissirostra 
type. Europe, America. 
C. familiaris, Selby, pl. 39. f. 2. 
* This and the next genus appear representatives of two subfamili 
