‘188 MR. E. C. STUART BAKER ON 
20. ALCIPPE PHAEOCEPHALA MAGNIROSTRIS. 
Alcippe magnirostris, Walden, Blyth’s B. of Burma, p. 115 ( 1878 ). 
Alcippe davisoni, Harington, Journ, B. N. H.S. xxiii. p. 453 (1915). 
4 2 Tung Song, P. Siam, 20-26. 9. 15. 
$ Klong Bang Lai, P. Siam, 14. 1. 16. 
Mr. Herbert’s specimens together with a good series in the 
sritish -Museum suffice to shew that Harington’s davisoni cannot be 
sustained. The extent of the markings on the head and hind neck 
appears to vary individually, and not according to any geographical 
distribution. Even in Mr. Herbert’s small series the variation is very 
noticeable, and there is no doubt Harington’s davisoni must be suppres- 
sed and become a synonym of magnirostris. 
21. STACHYRIS POLIOCEPHALUS. 
Timalia poliocephala, Yemm. Pl Col. pl, 593 fig. 2 (1336). 
2 Tung Song, P. Siam, 17. 9. 15. 
22. STACHYRIS NIGRICEPS DAVISONI. 
Stachyris davisoni, Sharpe, Bull, B. O, C. 1. p. 7 (1892). 
3 Tung Song, P. Siam, Sept. 15. 
This specimen agrees perfectly with others trom the Malay 
Peninsula. S. x davisoni is probably found throughout the greater part 
of Siam, as a second specimen from another district of Siam in the 
Tring Museam has, I think, correctly been referred to it by the late 
Col. Harington. 
23. STACHYRIDOPSIS RUFIFRONS OBSCURA. 
Baker, Bull, B. O. C. No, cexxvii. p. 10. (1917). 
24512 Klong Bang Lai, P. Siam, 20. 1. 16. 
This quite distinct new form is nearest to S. r. poliogaster, but 
is paler above and the red on the crown is less deep. The lores and 
cheeks are fulvous instead of grey; the fulvous on the breast brighter, 
paler and much more pronounced. The abdomen and flanks are grey 
as in that sub-species. 
The British Museum possesses a good series of poliogaster, so 
that fortunately comparison is easy. 
[t is rather curious that one should find in Siam a form separated 
from its nearest ally by a wide stretch of country occupied by less 
closely connected races. 
JOURN. NAT, HIST. SOC, SIAM. 
