A COLLECTION OF BIRD-SKINS FROM SIAM. 189 
24. MIXORNIS SUMATRANA RUBRICAPILLUS. 
Mixornis sumatranus, Bp, Conop. Ay, i, 850. p» 217, 
Stachyridopsis sulphurea, Rippon, Babe O: Cy xi. ps ET. 
2 2 Chan Teuk, EB. Siam, 12. 8. 15. © 
3 2 Pak Jong, E. Siam, 20. 8. 15. 
¢ Tung Song, P. Siam, 26. 9. 15. 
2 6 Klong Wang Hip, P. Siam, 4-9. 10. lo. 
3 Klong Bang Lai, P. Siam, 7. 11. 15. 
2 Maprit, P. Siam, 2. 1. 16. 
3 3 Klong Bang Lai, P. Siam, 22-28, 1. 16. 
8 Krabin, C. Siam, 28. 1. 10, 
Kloss in the “ Ibis” 1918 p. 204 describes certain birds under 
the name Mizornis rubricapille. sulphurea. When Col. Harington was 
writing his notes on the Indian Timeliidae we together examined the 
type of that bird in comparison with the huge series of this species in 
the British Museum, and satisfied ourselves that Rippon’s S. sulphurea 
could not possibly be separated from Miwxornis rubricapilla. These 
little birds differ inter se to a very great extent, and we found it most 
difficult to divide them into races. Rippon’s type is a bird which 
might well have been killed in Bengal, and agrees perfectly with speci- 
mens from that Province and from Assam. Specimens from the extreme 
West are noticeable for the small amount or red on the heads, and 
might possibly form a new sub-species, but as we found similar instan- 
ces amongst birds from Burma, Shan States and Siam, Harington 
wisely refrained from making another. 
Kloss rightly points out that swmatrana is the oldest name for 
any form of this species, and it should therefore be adopted as the spe- 
cific name, other names ranking as sub-specific only. 
Kloss’ Mixornis swmatrana connectens is possibly sustainable as 
a race ; from Burma to Sumatra the breast stripes appear to become 
steadily heavier and blacker, and the head and back more rufescent. 
Into how many races the species should be diviced is doubtful, and 
should depend on what areas are really inhabited by a distinct and 
constant form. 
25. CYANODERMA ERYTHROPTERUM SORDIDA., 
Baker, Bull, B. O. C. cexxvii. p. 10 (1917). 
23 Klong Wang Hip, P. Siam, 4. 10. 15, 
VOL. Ill, NO, Til, 1919. 
