440 MR. E. C. STUART BAKER ON 
¢ Samkok, C. Siam, 21.6.15 
¢ 2 Pak Jong, E. Siam, 18.8.15. 
$ 2 Krabin, C. Siam, 1.11.15. 
All five of these specimens must be placed under this sub- 
species. The stripes on the head and throat are well-developed, there 
is very little rufous wash on either breast or throat. The white 
spots on the tail are smaller than in the Sumatran bird, R. tristis 
tristis, and run across the tail at an angle instead of nearly straight. 
There are five distinguishable races of this Cuckoo, (1) R. ¢. 
tristis from Sumatra, (2) R. ¢. longicaudatus from Burma, Siam and 
Malay Peninsula, (3) R. ¢t. montanus from Northern India, Assam 
to Yunnan, (4) R. ¢. hainanws from Hainan, and (5) R. t. borneensis 
from Borneo. 
210. PHONICOPHAS ERYTHROGNATHUS. 
Phenicophes erythrognathus, Hartl. Verz. Mus. Brem. p. 95 (1844). 
retain all under the one generic head, and consider them to be species 
only. They cannot be reduced to sub-species, as there are not con- 
necting links to join the one with another. 
211. RHINORTHA CHLOROPHASA CHLOROPH AMA, 
Cuculus chloropheus, Raff. Trans. Linn. Soc. xiii, p, 288 (1822). 
Sumatra, 
¢ Tung Song, P. Siam, 24.9.15. 
? Maprit, P. Siam, 4.1.16. 
JOURN, NAT. HIST, SOC, SIAM. 
