Birds of Celebes: Treronidae. 



597 



Length of tarso-metatarsus 

 Length of digitus HI . . 

 Length of sternum . . . 

 Greatest breadth of sternum 

 Height of crista sterni . . 

 Length of coracoid . . . 

 Length of scapula .... 

 Length of clavicula . . . 

 Length of pelvis .... 

 Greatest breadth of pelvis . 



24.5 mm 



33.0 » 



49.0 » 



38.0 » 



19.0 » 



33.4 » 

 39.0 

 33.7 » 

 58.0 > 



36.5 » 



Skeleton. Length of cranium . . .51.0 mm 



Greatest breadth of cranium 19.6 » 



Length of humerus . . . 39.0 > 



Length of ulna 45.0 » 



Length of radius .... 40.0 » 



Length of manus .... 49.5 » 



Length of metacarpus . . 25.0 » 



Length of digitus principalis 23.8 » 



Length of femur .... 38.0 > 



Length of tibia 49.0 >» 



Length of fibula .... 30.0 » 

 Egg. White. "An egg taken by Dr. Platen at Rurukan (Minahassa) measures 28 X 21.5 mm" 



(Nehrkorn MS.). 

 Distribution. Celebes, the islands off the coasts, and Sula. — Sula Besi and Sula Mangoli 

 (Allen a 1, Bernstein, Hoedt a 6)\ Peling and Banggai (Nat. Coll. in Dresd. 

 and Tring Mus.); Togian (Meyer b 4); Banka, Lembeh, Mantehage and Manado tua 

 (Nat. Coll.); ]\Iinahassa (Rosenberg a 6, etc.]; Bolaang Mongondo Distr. (P.&F. 

 Sarasin); Gorontalo Distr. (Rosenb. a 6, Meyer b 4); "West Celebes (Doherty 5); 

 Tonkean, E. Peninsula (Nat. Coll. in Dresd. and Tring Mus.); Tjamba Distr. 

 (Platen b 6); Bonthain Distr. (Ev. 5); Macassar (Wall. I); Saleyer (Weber a 8, Ev. 3). 



The following has been separated as a subspecies by Mr. Hartert: 



~*" Osmotreron wallacei pallidior. 



Hartert, Nov. Zool. 1896, 178. 

 Diagnosis. Like northern specimens of the typical 0. icallacei, but "larger, with a stronger 



