116 



VISCOUTSTT WALDEN ON THE BIKDS OP 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, Muller. 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 : — 



England 8-31 ") 



Abyssinia 9-00 



Menado 7-50 



Deyra Doon 8-00 



» ,, 8-75 



India - 950 



Philippines 9-25 



Simla 8-50 J 



These measurements are taken from 

 examples in fully adult plumage, 

 and almost identical in colouring 

 and marking. 



Hiekococcyx, S. Muller. 



4. Hiekococctx cBASsraosTKis, 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. ICacomantis sepulcealis (Muller), 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 neAV 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. sepulcralis 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. 



