Genus —A ILURQ^DUS. 
Ailurcedus Cabanis, Mus. Heine., 
Vol. I., p. 213 (note), after Oct. 
23rd, 1851. Type (by mono- 
^yvj) • • . . 
Ptilonorhynchus smithi Vigors & Horsfield 
—Lanius crassirostris Payku]]. 
Also spelt— 
AllurcBdua ” Bonaparte " 
Aeluradua 
Gray, Cat. Gen. Subgen. Birds, p. 65, 1855. 
Chlorohitta “ Kaup ” Gray, Cat. 
Gen. Subgen. Birds, p. 148, 
before April 18th, 1855. As 
synonym of Ailurcedus Cabanis. 
Large Bower Birds with longish stout bills, long wing, long tail, and medium 
stout legs and feet. 
The bill is stout, nearly as long as the head, laterally compressed, deeper 
than wide at the base ; culmen arched, semi-keeled; tip decurved and pointed, 
notably notched posteriorly; lateral edges of upper mandible sinuate; 
nostrils open circular apertures basaUy in the deep depression half hidden 
by the encroaching frontal feathering and prominent nasal bristles extending 
over them ; rictals minute, scarcely discernible ; rmder mandible stout, nearly 
as strong as the upper; interramal space rounded, short and broad, gonys 
ascending about three-fourths the length of the biU. 
The wing is long with the fourth and fifth primaries subequal and longest, 
the third and sixth subequal and a little shorter, the second about equal to 
the eighth; the first primary short, about half the length of the fourth and 
shorter than the long secondaries. 
The tail is long and square in shape, the feathers broad. 
The legs medium in length and stout, seven scutes in front, bilaminate 
behind; the toes stout, inner toe and claw less than outer toe and claw and 
equal to middle toe alone, claws sharp, hind-toe stout and the claw longer, but 
the hind-toe and claw shorter then the middle toe and claw. 
Ailurcedus buccoides (Temm. & Laugier) differs in colour, is smaller, has 
a longer weaker bill, more open nostrils, more rounded wings and weaker 
feet with shorter toes. It constitutes a good subgenus which I name Bucco- 
kitta. 
Key to the Species. 
Ear-coverts and chin black, feathers on under-surface with 
uniform darker edges .. .. .. .. .. maculosus. 
Ear-coverts and chin not black, feathers on xmder-surface 
with light centres .. .. .. .. .. .. crassirostris. 
VOL. xn. 
313 
