250 MESSRS ROBINSON AND KLOSS ON 



Very common over the whole area throughout the winter 

 months. 



347. Pericrocotus cantonensis Swinh. 



Pericrocottis cantonensis, 8winh., Ibis, 18G1, p. 42 (Canton, South 

 China); Gates, Stray Feathers, x, 1881, p. 200 (Malewoon); C. i, 

 p. 243 ; L., p. 105 (Ghirbi and Junk Seylon). 



Pericrocotus immodestus, Hume, Stray Feathers, v, 1877, p. 177 

 (Tenasserim). 



Pericrocotics cinereus (part :), F., p. 55 (Trang). 



cJ , 3 2 . Tasan, Chum porn, Peninsular Siam, 18-22 March 

 1919 (Nos. 4671, 4701, 4746, 4781). 



" Iris dark ; bill and feet black ". 



Total length c? , 188 ; $ , 188, 197, 200 ; wing c^ , 87 ; $ , 87, 

 90, 90 ; tail d , 92 ; 2 , 94, 103, — ; tarsus d , 16 ; $ , 15.5, 16, 14 ; bill 

 from gape c? , 19 ; 9,17, 18, 20 mm. 



This species is really very distinct from P. cinereus, being 

 recognizable at all ages by the clay -brown, not pure grey, rump : by 

 the yellowish tinge of the quills and, in the adult male, by lacking 

 the deep glossy black of the occiput, clearly distinct from the grey 

 of the upper parts, which is characteristic of the adult of P. c inereus. 



P. cantonensis apparently breeds in South China and winters 

 in Tenasserim, Pegu and Siam, while P. cinereus both breeds further 

 north and has a more extensive winter range, obeying a rule which 

 is almost universally true, that the further north a migratory bird 

 breeds, the further south it is likely to extend in winter. We do 

 not see why the two forms should be regarded as subspecies : there 

 is no evidence or likelihood of intergradation, and they can hardly 

 be considered as representative geographical forms, as the winter 

 range of P. cantonensis is enveloped by that of P. cinereus. 

 348. Pericrocotus peregrinus vividus Baker. 



Pericrocotus peregrinus vividus, Baker, Bull. Biit. Oi'n. Club, xL, 



1920, p. 114 (Attaran River, Tenasserim). 

 Peria-ocotus peregrinus, A., p. 212 ( S. Tenasserim ) ; C. i, p. 245 ; 



Salvad. Ann. Mus. Civ. Gen. (2) vii, 1889, p. 433 (Malewoon). 



A. Hume iz Davison, Stray Feathers, vi, 1878. E. C). (jrant, Fasciculi Malayenses, iii (Birds), 1905. 



B. Miiller, Die Ornis dor Insel Salanga, 1882. F. Robinson and Kloss, Ibis, 1910-11. 



C Oatcs, Birds Brit. Burmah, Vols. i. & ii 1883. C. Oairdner, .Journ. N. H. Soc. Siam i. 1915. 



,D". Bonhf^te, P.Z.S. 1901, Vol. i. H. Kobinson, Journ. F. M. S. Museum, s, v, 1915. 



JOURN. NAT. H18T. SOC. SIAM. 



