116 VISCOUNT WALDEN ON THE BIRDS OF CELEBES. 
plumage changing to the adult stage, the transverse, pectoral, and abdominal bands 
rather broader, and with immaculate buff under tail-coverts, seem to belong to the same 
species; and a fourth, in bright chestnut and brown plumage, must be referred to it. 
Without the example in full plumage it would have been difficult to say whether the 
other three did not belong to C. canoroides, Miiller. If C. canoroides is equal to C. 
saturatus, Hodgs., =C. himalayanus, ap. Jerd., it is a very distinct form; but I have 
never met with an Archipelagic Cuckoo in the dark adult plumage of Himalayan 
C. saturatus. Timor and Amboyna examples of so-called C. canoroides only differ 
from those of C. canorus by having a shorter wing. But individuals of C. canorus 
from different parts of the Old World (that is, individuals identical in plumage) vary 
extremely in the length of wing, as the following table shows :— 
Hinglandi a cist eteritulats Sic tnecoteree ec tev ois 8:31 
ATDYBSIMIA) :rayerserciennysnsvebetelerectrs she) s careiclsre 9-00 
Menadd' tree «ctemeastenier vette ose teietsteiorer 7:50 | These measurements are taken from 
DéyrayDoons Peon -taemeichisnies os erontokeca ete 8:00 examples in fully adult plumage, 
55 ee Piotr SO DUO RT TORT or 8-75 and almost identical in colouring 
LEEW Sees ctoct-lo od SOS OO MEE OF 9°50 and marking. 
Ibi ippimes Perce ei elerrey keels 9°25 
Bamlay farareccveersisiwis alsin cine ayerare wistere savant 8°50 
Hrierococcyx, 8. Miiller. 
4, Hrerococcyx cRAssrRostRis, Walden, Ann. & Mag. Nat. Hist. ser. 4, vol. ix. p. 305, 
“North Celebes” (1st April 1872). (Plate XIII.) 
This species, in mature plumage, most nearly resembles C. micropterus, Gould. 
5. TCACOMANTIS SEPULCRALIS (Miiller), Verhandel. p. 177, not., sp. 2, “Java, Sumatra.” 
For the present I refer three examples of a Cacomantis obtained by Dr. Meyer in 
North Celebes to the Javan species, rather than create a new title; for without a 
large series of individuals inhabiting all parts of the archipelago it is impossible to 
discriminate the species belonging to this perplexing group. 
One of the three Celebean examples is in fully mature plumage, and has the chin, 
cheeks, and throat pale grey, the head iron-grey, the upper plumage deep bronze- 
green, the breast, abdominal region, flanks, under tail-, and shoulder-coverts deep 
rufous; the middle pair of rectrices are black, the outer one black-brown tipped with 
white, and with one or two small white shallow triangular marks on the edge of the 
inner webs; the quills are traversed by the usual white band. Wing 4:25 inches, 
tail 5°75. 
These Celebean individuals differ from all examples of the Javan C. sepuleralis known 
to me in the much deeper bronze-green of the upper plumage, the much deeper rufous 
of the under, and in their shorter wings and tail. 
