VISCOUNT WALDEN ON THE BIRDS OF CELEBES. 55 
C. sonnerati, Lath., founded on Sonnerat’s Petit coucow des Indes (Voy. Indes, ii. 
p. 211), from its being more or less rufous at all ages, and a small species, has been 
often confounded with either one or other of the foregoing. Its Javan representative, 
but slightly differing, is the C. pravatus, Horsf., =C. fasciolatus, 8. Miiller, =C. rufo- 
vittatus, Drapiez. The group is also represented in Sumatra, Malacca, Borneo, and 
Ceylon. This form, raised to generic rank by Dr. Cabanis (Penthoceryx), has the bill 
long, broad at the base, and uncompressed throughout its entire length, the maxilla 
overlapping the mandibula. In old birds the rufous and dark brown bands of the 
upper plumage are washed with bronze-green. From the chin to the under tail- 
coverts each feather is white, traversed by usually three narrow, dusky, irregular lines ; 
the white interspaces being three or four times as broad as the dusky lines. A 
uniform transverse striated appearance is thus imparted to the under plumage, never 
found in any other group of the small Asiatic Cuckoos. The middle pair of rectrices 
are, according to age, either almost entirely dark brown with a bronzy gloss, or else 
have both sides of the shaft dark brown, indented with bright rufous. The lateral 
rectrices are never evenly barred through, are always bright rufous with dark cross 
marks, have a white or else a pale fulvous terminal spot and a penultimate broad 
dark brown band. Many of the frontal plumes are white at their base and in the 
centre—a character alone sufficient to distinguish this group from any of the Plaintive 
Cuckoos in hepatic plumage. 
C. infuscatus, Hartl., is either another type of the Plaintive Cuckoos, or else it 
belongs to the same subsection of C. passerinus; or it may prove to be only a phase of 
C. simus. 
A Macassar specimen, collected by Mr. Wallace, appears to belong to the group of 
which C. merulinus is typical. It has six of the secondary quills with rufous bars, part 
of the unmoulted hepatic dress; otherwise it is undistinguishable from Javan examples 
of C. lanceolatus. The lateral rectrices are, as in that species, broadly barred with pure 
white. It is, however, a larger bird, with wings and tail somewhat longer. Wing 4g, 
tail 4€. 
CENTROPODIN. 
PyRRHOCENTOR, Cabanis. 
63. PYRRHOCENTOR CELEBENSIS (Quoy & Gaimard), Voy. Astrol. Zool. i. p. 230, pl. 20, 
“¢Menado ” (1830). 
Centropus bicolor, Cuvier, Mus. Paris, fide Pucheran, Rev. et Mag. Zool. 1852, p. 472; Lesson, Tr. 
p- 137 (1831). “ 
Hab. Menado (mus. nostr.); Gorontalo (Forsten). 
I cannot find that Cuvier ever published his title of C. bicolor. A second species of 
this subsection inhabits the Philippines (P. wnirufus, Cab.). But it is not unlikely that 
