1872.] ON THE BIRDS OP CELEBES. 213 



primary has no white spot, while on each of the three next it is much smaller than in 

 C. macrounis, which has a large white spot on all four primaries. The length of wing is equal 

 to the average length observable in the Javan bird, seven and a quarter inches ; nor do the 

 dimensions of the tail (six inches) differ. 



As there are two Bornean species, C. nrnnrlinareus, Jacq. & Puch., and C. hinofatus, Bp., 

 which have yet to be satisfactorily identified, I refrain from conferring a distinct title on this 

 Celebean Nightjar. 



CUCULUS, Linn. 



3. CucuLUS CANORUS, Linn. S. N. i. p. 168 (1766). 



A single specimen obtained by Dr. Meyer in North Celebes is not to be distinguished from 

 a British-killed example of the adult Common Cuckoo. The wing alone is shorter, 7-50 against 

 8"31 ; the tail is equal. Two other specimens, with the upper plumage changing to the adult rp 7 c, — 

 stage, the transverse, pectoral, and abdominal bands rather broader, and with immaculate buff p- 116. 

 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. himalaijanus, 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. caiboroidcs 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 O'OO 



Menado 7-50 



Deyra Boon 8-00 i 



„ „ ■ 8-75 



India n-50 



Philippines 925 



Simla 8-50 , 



These measurements are taken from 

 examples in fully adult plumage, 

 and almost identical in colouring 

 and marking. 



HiEROCOCCTX, S. Miiller. 



4. HiEROCOCCTX CRASSiROSTRis, Walden, Ann. & Mag. Nat. Hist. ser. 4, vol. ix. p. 30o*, 

 " North Celebes " (1st April, 1872). (Plate XIII. m orirj.) 



This species, in mature plumage, most nearly resembles C. microptenis, Gould. 



5. 1 Cacomantis 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, 



* lAnted, p. 123.— Ed.] 



2f 



