294 ON THE CLASSIFICATION OF BI :D 
PyrruvuLtaupA, Smith. Bill short; the sides muc 
compressed ; the tip entire; the culmen arched: com. 
missure straight. Nostrils concealed. by the frontal 
feathers. Wings moderate; the first quill very small, 
and spurious; the three next equal, and longest. 
Tail moderate, slightly forked. Feet black. Tarsi 
moderate. ‘Toes very small, Lateral toes equal . 
Hinder claws lengthened, slightly curved. 
leucotis. Pl. Col. 269. f. 2. melanosoma. Part 5. No. 108. — 
cruciger. Ib. 269. f. 1. y 
Pyrruuta. Bill remarkably’ short, swelled on every 
side: the upper mandible smaller than the under, 
and considerably wider above than it is high: culmen 
arched from its base: commissure curved. Wings 
moderate ; the four first quills of nearly equal length, 
and longest. Tail moderate, even, sometimes diva- 
ricated. Lateral toes uneqeae the inner shortest 
middle toe and tarsus equal. 
P. vulgaris. Selby, pl. 54. f. 1, 2. 
Crithagra, Sw. Bill short, resembling that of Pyr- 
rhula. Wings moderate ; the three first quills nearly 
equal. Tail moderate, slightly forked. Tarsus 
shorter than the middle toe. Lateral toes equal. 
Claws lengthened, slender, acute, and but slightly 
curved ; the hinder as long as its toe. Africa, India. 
C. sulphurata. I.0.109. f.1. canaria. Part 5. No. 113. — 
cinerea. Part 5. No. 115. chrysopyga. W. Af. pl. 17. 
strigilata. Ib. No. 111. ruficauda. Part 5. No. 109. 
canicollis. Ib. No. 110. bistrigata. Ib. No. 112. 
flava. Ib. No. 114. 
Spermophila, Sw. General structure of Pyrrhula. 
Bill less swelled. Tail rounded. Wings shorter and 
more rounded. Lateral toes equal ; middle toe longer 
_ than the tarsus. America only. 7 
S. rubiginosa. Spix, ii. pl. 59. f.1. albogularis. Sp. ii. 60. f. Le 
cinereola. Pl. Col. pli. of 
PsirtirostrA, Temm. Bill short, much hooked, 
slightly swelled at its base: upper mandible with its” 
tip curved over the lower, which has the tip rounded — 
