44 BULLETIN 96, UNITED STATES NATIONAL MUSEUM. 



Adult female (type), No. 171080, U.S.N.M.; Pulo Jimaja, Septem- 

 ber 22, 1899. 



The iris, it will be noticed, is white or gray. All five specimens 

 show more or less evidences of the nearly completed molt, but on 

 those collected on September 19 and 22 only slight traces remain. 



Measurements of the series of Pycnonotus simplex halizonus are 

 given below: 



Measurements of specimens of Pycnonotus simplex halizonus. 



Measured in the flesh by the collector. 



Type. 



There are evidently two distinct species at present confused under 

 the name Pycnonotus simplex. One of these is a large bird, in color 

 much resembling Pycnonotus plumosus, with rather yellowish brown 

 upper parts; distinctly scaly crown feathers; brownish and buffy 

 lower surface, particularly the crissum; and red or orange iris; to 

 which the name Pycnonotus brunneus of Blyth, 3 despite the briefness 

 of the accompanying description, undoubtedly applies. The other 

 species, which occupies nearly the same geographic range, is of 

 smaller size ; has no scaly appearance on the feathers of the crown ; 

 has a darker, more greenish olive brown upper surface; lower parts 

 with the dark areas grayish, rather than buffy, brown ; the light areas, 

 especially the crissum and throat, whitish, with yellowish instead of 

 brownish and buffy suffusion ; iris white or grayish ; and in general 

 coloration is almost identical with Iole olivciceei. This bird is Picno- 

 notus simplex Lesson. 4 Dr. C. W. Richmond lias recently identified 5 

 Picnonotus simplex Lesson with the large, brownish and buffy, red- 

 eyed species; and following him the present writer described the Su- 

 matra race of the white-eyed bird as Pycnonotus olivaceus cliloeodis. e 

 After much further study of these birds I am now convinced, how- 



1 Journ. Asiatic Soc. Bengal, vol. 14, pt. 2, No. 164, December, 1845, p. 60S (Malacca, Malay Peninsula). 



* Rev. Zool., vol. 2, June, 1839, p. 167 (Sumatra). 



* Proc. U. S. Nat. Mus., vol. 26. Feb. 4, 1903, pp. 506-507. 

 « Smiths. Misc. Coll., vol. 60, No. 7, Oct. 26, 1912, p. 11. 



