SOME RECENTLY DESCRIBED SIAMESE BIRDS. 449 
longer and largely grey (instead of black) tail feathers, and there are 
other differences as well—such as wing black with a greenish sheen 
in the first, length 96-106 mm; largely grey in the second, length 
104-112 mm. 
If my birds are not polioptera as I think, I feel I can say 
with some certainty that they are not neglecta, young or old, as 
Baker states. 
The specimens seen by Baker from Tung Song and Klong 
Wang Hip, Peninsular Siam, are, no doubt, neglecta and similar to 
to those I have before me from the same district; but I should 
hardly be prepared to call that a species. It is, with the more 
southern mainland form culminata, only a race of the Javanese 
jimbriata of Temminck; and the generic name of all these now 
appears to me to be properly Lalage. 
The truth, which Baker does not realise, is that two distinct 
birds exist—the smaller and generally darker neglecta ranging from 
Mergui in South Tenasserim (typical locality) through Peninsular 
Siam, but becoming culminata in the Malay States: and the larger 
and more variegated polioptera extending from Cochin-China (typi- 
cal locality) to Northern Siam and to Koh Lak in South-western 
Siam. 
Pycnonotus blanfordi robinsoni, Kloss, t. c., p. 200. 
Pycnonotus blanfordi blanfordi, Baker, Ibis 1918, p. 595. 
Pycnonotus blanfordi, Baker, Journ., t. c., p. 197. 
Mr. Baker considers that thes: names are synonymous, but 
such material as I have been able to examine shows otherwise, 
though P. b. robinsoni is not, I admit, a strongly differentiated 
form. I have, however, found it locally consistent. 
_ Otocompsa flaviventris minor, Kloss, t. c., p. 200. 
Otocompsa flaviventris johnsoni, Baker, Ibis 1918, p. 597; id, 
Journ., t. c., p. 194. 
Mr. Baker agrees that my type specimen of O. f. minor dif- 
fers in smaller size from the typical O. f faviventris and I said. 
when proposing a new race, that it was the same as birds occurring 
throughout the Malay Peninsula as shown by the examination of a 
VOL. III, NO. 4, 1919. 
