18 BOURNS AND WORCESTER: PRELIMINARY NOTES. 



A female measured 3. 50 in length. Culmen, .68. Wing, 1.58. 

 Tail, 90. Tarsus, .52. ' 



Habitat: Negros, Cebu, Masbate. 



This pretty species can be readily distinguished from the last, its 

 nearest ally, by its orange yellow throat with heavier orange red 

 markings. The female also differs from that of Aethopyga arolasi 

 in having a yellow rump. 



16. Aetbopyga minuta sp. nov. 



Adult male. Like Aethopyga arolasi, but smaller, and the throat 

 pure yellow without the faintest trace of orange red. We regret 

 that we are unable to furnish exact measurements because our 

 type specimen, a male in fine plumage disappeared from the col- 

 lection in July,, 1894. 



Habitat: Mindoro. 



This tiny species is rare in Mindoro and was seen by us on but 

 two occasions. 



17. Dicaenm pallidior sp. nov. 



Adult male. Above exactly like D. dorsale, which by the way has 

 the back slaty blue, not slaty grey, as stated in Cat. B., Vol. x , p. 

 40. Entire under surface yellow, only slightly deeper on the breast, 

 and not rich orange as in D. dorsale. Habitat: Cebu. 



Were it not that we have a large series of birds from Cebu in 

 breeding plumage we should not think of separating the Cebu birds, 

 but with the series of specimens now before us we cannot do other- 

 wise. The almost uniform yellow under surface of D. pallidior, 

 contrasts strongly with the yellow throat and abdomen and bright 

 orange breast of D. dorsald* Young . males of D. dorsale show 

 streaks of orange on the breast long before reaching maturity, hence 

 the difference is not a matter of age and, as we have already re- 

 marked, our Cebu birds were in breeding plumage. The female is 

 like that of D. dorsale. 



Measurements of eleven males: Length, 3.50 inches. Culmen, .55. 

 Wing, 1.92. Tail, 1.03. Tarsus, .51. 



Of four females: Length, 3.31. Wing, 1.88. Tail, .98. Tarsus, 49. 



18. Dicaeum sibuyanica sp. nov. 



A well marked species of the D. dorsale type and the largest rep- 

 resentative of this type yet discovered in the Philippine islands. A 

 very noticeable characteristic is that fully adult birds always have 

 the base of the lower mandible whitish as do the young of most 

 other species of the genus. 



