272 ON THE CLASSIFICATION OP BIRDS. 
long, ample ; the first quiU spurious ; the third, 
fourth, and fifth of equal length, and longest. Tail 
short, even, rounded, or (as in the rasorial type (6) ) 
considerably lengthened, and cuneated. Feet very 
large and strong. Middle toe and tarsus equal ; hinder 
toe strong, but much shorter ; lateral toes unequal. 
L. ptilonorynclius. West, rufipennis. Ois. d’Af. pi. 83, 
Af. i. 140. f Jig. 242. a) 84. (6) 
chrysonotis. lb. i. pi. 6. albiventris. Part 5. No. 53. 
eyanotis. Ib. i. 146. (c) fulvipennis. Parts. No. 54. 
rufiventris. Ib. i. 151. inelatiogaster. Parts. No. 53. 
leucogasler. Ib. i. pi. 8. longicauda. W. Af. i. pi. 7. (b) 
SoBFAM. SCAPHIDUllIN/Ii. Boat-TaUs. 
Bill of a very lengthened conic shape, entire, and com- 
pressed : the culmen slightly curved. Tail graduated, 
the sides refiected upwards, or boat-shaped. Feet 
strong. 
Asthapia, Vieillot. General structure of Lamprotor- 
nis ; but the tail excessively long and boat-shaped. * 
A. gularis. Vieil. Gal. pi. 107. 
ScA^HiDURA, Sw. Bill longer than the head, conic. 
Both mandibles equally thick. The base of the culmen 
broad, flattened, and advancing very far on the front 
of the head. Commissure angulated at the base, and 
sinuated on the sides. Nostrils basal, placed in a 
small triangular hollow on the sides : the membrane 
obsolete. Wings lengthened, pointed ; the first quill 
longest. Tail moderate, graduated, boat-shaped. 
Feet strong. Middle toe and tarsus of equal length ; 
hinder toe much shorter; inner toe hardly shorter 
than the outer. South America. 
S. barita. Part 5. No. 62. crassirostra. Ib. No. 63. 
Quiscalus, Vieillot. Bill longer than the head, com- 
pressed. Both mandibles equally thick. Culmen 
slightly curved, and compressed from the base, where 
it simply divides the frontal feathers, without being 
* Not having a specimen of this excessively valuable bird to examine, I 
am unable* to add its full characters : and nothing essential can be learned 
from M. Vieillot’s detinition. 
