CrCULID^. CUCUMN^. 
321 
Buphaga, Latham. Oxpecker. Bill thick, strong, 
slightly compressed : the inferior mandible much 
thicker than the upper, particularly at its base, where 
it is somewhat dilated. Culmen slightly elevated, 
and gradually arched from the base. Frontal feathers 
advancing to one half the length of the upper man- 
dible. Wings rather long, and pointed. Tail cune- 
ated ; the feathers lanceolate and stiff. Feet strong 
(yij. 78. Vol. 1. p. 144.). Tarsus very short. Lateral 
toes equal. All the claws large, broad, and remark- 
ably hooked. Africa only. 
B. Africans. Pl.Enl. 379. erythroryncha. P. Col. 465. 
Orth ONYX, Temminck. (^5.77. Vol.I. p.HS.) Bill very 
short, straight, hut the culmen arched from the base ; 
the sides considerably compressed. Nostrils large, 
basal. Wings moderate, hut considerably rounded ; 
the four first quills graduated, and shorter than the 
fifth. Tail rather lengthened, rounded; the feathers 
very broad, and the webs soft, but the shafts stiff) 
very rigid, and terminating in naked points. Feet 
enormously large and strong. The outer toe rather 
longer than the middle, which is again longer than 
the inner toe ; hinder toe shorter than the middle. 
Tarsus longer than either of the toes. Claws strong, 
very slightly curved ; the anterior all of the same 
length ; the hinder one longest. Australia only. 
O. spinicaudus. PI. Col. 428, 429. 
Famiuy CUCULIDiE. The Cuckows. 
Bill slender. The external hind toe capable of being- 
brought half way forward. 
Sdei'am. CUCULINJi. Parasitic Cuckows. 
Wings pointed. Nostrils round. Bill slender, convex 
above. The tarsus very short. {Jig. 284.} 
CiTcuLus, Linn. {Jig. 284. a) Bill broad at the base ; the 
upper mandible obsoletely notched : culmen convex. 
Nostrils circular. Wings long, pointed ; the third 
VOL. II. Y 
