THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM 191 



\Vc tliiiilv, then, that in lace of thoHe figures it must be con 

 tended that the birds of the species inhabiting the area north ot 

 about 10 N. arc larger birds, and that birds of high elevations are 

 also larger. 



As regards colour : 



(a) Two out of the four n(n-thern birds available for examina- 

 tion have the yellow crest unbarred. 



Two out of twenty of the southern birds have the yellow 

 crest unbarred. 



(b) Intei'scapuliuni strongly barred in three out of four north- 

 ern birds. Interscapuliuni uniform or slightly spotted in fourteen 

 out of twenty one southern birds ; barred more or less strongly in 

 the remaining seven. 



This difierence is also noted by Hume and Davison, up. cit. 

 aupra. 



Northern birds have generally the pale interspaces on the 

 undersurfacc broader and paler than in southern birds, but the 

 character cannot be fully relied on as some southern birds have it. 

 We think, therefore, that G. m. perhitus can fairly Ije maintained as 

 a northern local race which, however, is not found south of about 

 10 . 80', as Chumporn and Pakchan birds are, on the whole, to be 

 referred to G, in. malaccensis. 



[A pair from Bangtaphan, S. W. Siam, lent by Mr. Williamson 

 ai:e also G. m. perlutus. Wings, 135, 136 ; bill fronj gape 32, 30 mm. 

 Interscapulium strongly barred ; one with yellow crest unbarred, one 

 barred ; underparts with pale bars broad]. 



285. Chrysophlegma mentale humii Hargitt. 



Callolojihits mentalis (nee. Teium.), A., p. 138 (BaukjiJioon) ; C ii, 



p. 46. 

 Ghrysuphleyma humii, Hargitt, Ibis, 1889, p. 231 {6 , Malacca ; 



9, Klaiig); E., p. 100 (Pataui); F., p. 46 (Trang) ; H., p. 95 



(Bandou), M., p. 423 (Tung Song). 



!• Gyldenstolpe, Kungl. Sv. Vet. Akad. Handl. M« Baker, Joum. X. H. Hoc. Biam, iii. 1919. 



56, No. '2, 1916. (first part*. 



J. Uobinsoii, Jouru. V. M. S. Mus. vii, 1917. Baker, Joum. X. H. Soc. Siam, iii, 1910. 



K. Kloss, Ibis, 1918. (second partt. 



L.. Rol)inson and Kloss, Journ. Jf. H. Soo. Siam. M. I. Baker, Joiirn. X. H. Soc. Siam, iv, 1920. 



iii. 1919. (third part). 



VOL. V, NO. 2, 192'2. 



