G32 
Birds of Celebes: TreroBidae. 
Female. .Just like the male, but is probably somewhat smaller (g, Kottabangon, Mongoiido 
Distr., 2. Xn. 93: P. & F. Sarasin. Wing 232, tail 120 mm, as against wing 247, 
tail 140 in the above ry’). 
Measurements (15 examples from X. Celebes and the islands off the coast). AVing 232—249; 
tail c. 120—140; tarsus c. 32; bill from feathers of forehead 21 — 23 mm. 
Skeleton. 
Length of cranium .... 
G3.0 
mm 
Length of tarso-metatarsus 
32.5 
mm 
Greatest breadth of cranium . 
23.6 
» 
Length of digitus HI . . . 
46.5 
» 
Length of humerus .... 
56.0 
* 
Length of sternum . . . . 
61.4 
■» 
Length of ulna 
67.0 
» 
Greatest breadth of sternum . 
41.0 
Length of radius 
60.0 
Height of crista sterni . . . 
23.5 
Lengtli of manus 
72.0 
Length of coracoideum . . . 
44.0 
* 
Length of metacarpus . . . 
:18.4 
» 
Length of scapula . . . . 
46.0 
Jjength of digitus principalis . 
35.3 
Length of clavicula dextra 
36.0 
> 
Length of femur 
47.3 
Length of pelvis 
74.0 
> 
Length of tibia 
61.0 
Greatest breadth of pelvis . . 
41.5 
Length of fibula 
47.0 
Distribution. Celebes and Sula: — Minahassa (Forsten h 7, Wall, b 4, 15, etc.); Lembeh, 
Banka, Mantehage and Manado tua (Nat. Coll, in Dresd. Mus.); Talissi (Hickson 13)] 
Mongondo Distr. (P. & F. Sarasin 77); Gorontalo Distr. (v. Eosenb. b 7, Eiedel 12, 
Meyer 6); East Celebes (Nat. Coll.); West Celebes (Doherty 20)] Luwu, Gulf of 
Boni (Weber 16)] near Macassar (Wallace h 4, b 6, 15)] Sula Islands (Allen b 3)] 
Sula Besi (Bernstein bl, Hoedt b 7)] Sula Mangoli (Bernst. 5 7); Peling and 
Banggai (Nat. Coll.) 
This form of Myristidvora is confined to Celebes and Sula, and, though 
it is also found on the small islands close to the coast, it cannot he said to be 
of oceanic habits like the wide-spread M. hicolor. The latter is easily to be re- 
cognised by its having the four or five innermost secondaries white like the 
scapulars, and the nib of the bill dusky horn-colour, not yellow. 
Some doubts have existed as to the number of tail-feathers in M. luctuosa, 
whether 12 or 14, and Prof. W. Blasius (12) has suggested the possibility that 
both numbers may normally exist in this Pigeon — that it may in fact be 
dimorphous. In a series of 17 examples in the Dresden Museum the majority 
have 14 tail-feathers, others 13, 12, or less; in the case of an odd number there 
is, of course, a feather missing, and in one case of 12 we can make out 2 
feathers as missing, and we believe it will be found in all cases of 12 rectrices 
that the bird has moulted or otherwise lost 2 feathers. The allied Mynstidvora 
spilorrhoa was originally believed to have only 12 rectrices (Cassin, U. S. Expl. 
Exp. 1858, 266; AValden 3\ but Dr. Sharpe has satisfactorily proved that the 
number is 14, as in the other Myristidvorae (P. Z. S. 1875, 108). 
The white Pigeons of the genus Myristidvora belong to five species found 
from Siam and the Andamans as far as North Australia. From M. luctmsa all 
the other four species may be distinguished by their white inner secondaries. 
Perhaps M. spilorrhoa stands nearest to the Celebesian bird, since it has the nib 
of the bill yellow, and black spots on the flanks and crissum, but the under 
