1862.] MR. WALLACE ON BIRDS FROM THE SULA ISLANDS. 333 



Ateles charaeck 



paniscus * 



arachnoides* 



geoffroyii 



belzebuth * 



belzebuth 



Brachyteles hypoxanthus 



Lagothrix humboldtii 



Mycetes seniculus 



ursinus 



Cebus fatuellus 



cirrhifer 



apella 



— — hypoleucus 



capucinus 



capucinus* 



Cerv. 



Ouakaria calvus 



spixii 



Pithecia monachus * 



Saimaris sciurea 



sciureus* 



Nyctipithecus felinus 



trivirgatus * . . . 



lacchus Oedipus 



vulgaris 



vulgaris * 



auritus 



D. 



L. 



14 

 13 

 14 

 14 

 14 

 13 

 13 

 14 

 14 

 14 

 14 

 14 

 14 

 12 

 14 

 13 

 14 

 14 

 13 

 13 

 13 

 13 

 13 

 13 

 15 

 13 

 13 

 13 

 13 



S. Caud. 



33 

 31 

 31 

 33 

 31 

 33 

 ? 



30 

 27 



? 



26 



? 



27 

 30 



p 



23 

 24 

 25 

 18 

 18 

 26 

 27 

 24 

 18 

 27 

 33 

 28 

 19 

 28 



2. List of Birds from the Sula Islands (east of Celebes), 

 WITH Descriptions of the New Species. By Alfred 

 RussEL Wallace, F.Z.S. 



(Plates XXXVIII., XXXIX., XL.) 



These islands must not be confounded with the Soloo Islands, be- 

 tween Borneo and Mindanao. On our maps they are written Zula, 

 or Xulla ; but as neither of these gives the correct pronunciation, I 

 write the name exactly as it is pronounced by the natives. The 

 group consists of three islands, Sula Mangola to the east, Sula Ta- 

 liabo to the west, and Sula Bessi to the south. They lie nearly 

 equidistant between Celebes and the Moluccas, being about eighty 

 miles from the nearest part of Celebes, but with several intervening 

 islands ; only forty from Bouru, but a clear sea between them ; and 

 about ninety from Batchian, with the Obi Islands intervening. The 

 two larger of the Sula Islands are each about fifty miles long and 

 twelve to fifteen wide. 



Islands so small, and so surrounded by others whose productions 

 are more or less known, might be expected to be not worth visiting 

 by the naturalist, as it would seem most probable that they would 

 contain only the common species of the surrounding islands. Be- 



