588 



Birds of Celebes: Oriolidae. 



(Measurements continued.) 



Wing 



TaU 



r. (C 12278) ad., Banka, 10. V. 93 (Nat. Coll.) ... 135 93 



s. (C 12277) ad., Banka, 14. V. 93 (Nat. Coll.) .... 145 100 



t. (C 13423) a' ad., Marcs, S. Cel., 10. H. 78 (Platen) . 143 102 



u. (C 13424) cT acl, Maros, S. Cel., H. 78 (Platen) . . 148 97 



V. (C 13425) cT ad., Maros, S. Cel., K 78 (Platen) . . 139 99 



w. (C 13426) 0* ad., Kalibangkere, S.Cel, 3. IV. 78 (Plat.) 144 99 



X. (C 13427) 5 vix ad., Maros, S. Cel., 15. 11. 78 (Platen) 141 101 



The Gorontalo birds appear to be on an average a trifle larger. 

 Skeleton. 



Length of cranium . . . 

 Greatest breadth of craniiun 

 Length of himierus . . 



Bill from 

 nostril 



Length of ulna 



Length of radius .... 

 Length of manus .... 

 Length of metacarpus . . 

 Length of digitus principalis 

 Length of femur .... 



Length of tibia 



Length of fibida .... 



51.0 mm 

 20.7 > 

 31.2 » 



38.0 . 



36.0 

 36.0 

 21.2 

 15.6 

 27.0 

 37.5 

 16.0 



Length of tarso-metatarsus . 

 Length of digitus HI . . 

 Length of sternum . . 

 Greatest breadth of sternum 

 Height of crista sterni . . 

 Length of coracoideum . . 

 Length of scapula .... 

 Length of clavicula . . . 

 Length of pehas .... 

 Greatest breadth of pelvis . 



20.5 



21 



20.5 



21 



22.4 mm 



24.5 > 

 30.5 .. 

 20.0 > 

 10.5 » 

 25.0 ' 

 28.0 ' 

 22.0 » 

 32.0 

 21.0 » 



Egg. 



"An egg in my collection taken by Dr. Platen at Rurukan, Minahassa, differs in no 

 way from those of our common 0. galbula" (Nehrkorn MS.). 



The Celebesian Golden Oriole is very closely related to O. coronatiis Sw. 

 of Sumatra, Java, Borneo, and to O. insidaris Vord. of the Kangean Islands. 

 Except that O. celehensis is not smaller than O. coronatus, Briiggemann has 

 well pointed out the differences between the two forms; 1. O. celehensis has a 

 shorter bill; 2. it wants the yellow speculum formed by the tips of the pri- 

 mary coverts (one of our S. Celebesian specimens shows this as in Java birds); 

 3. the two middle tail-feathers are greenish yellow in O. celehensis, black in 

 O. coronatus, in both tipped with yellow; 4. the black coronet is broader in 

 the Javan form. In respect of the tail the two forms never seem to intergrade. 

 The Kangean form is said to have the tail like O. coronatus, by which it may 

 be distinguished from our bird. 



The South Celebesian race stands nearer to O. coronatus than does that of 

 North Celebes, suggesting that Celebes was colonised from the south, or that 

 there has been a recent immigration and admixture of Javan bii'ds in the South. 



Dr. Platen says O. celehensis almost always flies in pairs, and has a clear 

 note. Its Javan relative is described by Bernstein (J. f. Orn. 1859, 270) as 

 having a flute-like song like the European O. galhida L., feeding chiefly upon 

 insects, occasionally fruit, and attaching its nest to the fork of an outermost 

 twig in the top of a high tree. 



