20 PEOCEEDINGS OF THE NATIONAL MUSEUM, vol.64. 



The adult has the chin and throat black, the feathers obscurely 

 fringed with a little white; the two outer primaries are barred on 

 the inner web with white, these bars having a little cinnamon ap- 

 j^earing towards the rachis on the third and the bars becoming 

 entirely cinnamon on the fifth primary; otherwise it agrees fairly 

 well with the descriptions. 



The specimen from Kano Lindoe is not fully adult; it is much 

 browner on the back; the chin is white; only the sides of the 

 throat are entirely black, the center being barred black and white; 

 the primaries are narrower than in the adult, the white bars on 

 the inner web of the two outer ones being almost obsolete, not more 

 than spots, and the cinnamon bars on the inner web are also 

 obscure and basal; the inner secondaries are softer and longer and 

 the tail softer than in the adult ; otherwise it is like the adult. 



From the above it would appear as if the birds of this genus go 

 through several stages of plumage before becoming adult. Natural- 

 ists describing closely related forms should bear this in mind and 

 try to compare specimens of the same age. This is hard to determine 

 in birds in which the young plumage resembles the adult and often 

 can only be worked out by series taken during various seasons at or 

 near the same locality. 



Judging from descriptions, H. saturata of New Guinea and H. sul- 

 cirostris of the Sula Islands are only subspecies of the Celebes bird. 

 H. torquatm of the Philippines has been derived from the same stock 

 as H. celebensis and only differs from it noticeably in the brown 

 j)ectoral band of the former, but this difference is pronounced and 

 constant enough to keep them apart as species. 



25. GYMNOCREX ROSENBERGI (Schleffel). 



One male and one female, Laboea Sore, November 16 and 21, 1916. 



Both are apparently adult and measure as follows, the male placed 

 first : Wing, 194-208 ; tail, 74-73.5 ; culmen, 36-39.5 ; tarsus, 67.5-69 ; 

 middle tone, 36.5-39.5. 



Bare skin behind eye, cobalt blue; eyelid reddish; iris brown; tarsus yel- 

 lowish-green. — H. C. R. 



26. RALLINA MINAHASA Wallace. 



One adult female, Likoepang, March 4, 1916. 

 This specimen measures as follows: Wing, 132; tail, 63; culmen, 

 26; tarsus, 42; middle toe with claw, 42. 



27. OENOLIMNAS ISABELLINA (Schlegel). 



One male, Soemalata, September 3, 1914; one male and one female. 

 Laboea Sore, November 18 and 28, 1916. 



