28 MESSRS. ROBINSON AND KLOSS ON 



ese bird. We liave been able to compare Bornean, Malayan, Siamese, 

 Cochin-Chinese and Annamese specimens, and are certain that, broadly 

 speakintf, no real colour-distinction can be correlated with range, but 

 the northern birds are undoubtedly on average larger than the 

 ^lalayiin. 



The whole of the series of the Malay Peninsula, from its 

 extreme northern limit to the islands south of Singapore, does not 

 afford any bird approaching in smallness the minimum wing dimen" 

 sioiis for T. curviroHfra given by Stuart Baker (124 mm.), while some 

 from the extreme south are as large as others from the extreme north. 



On the whole, however, it is true that northern birds average 

 larger than the southern. Rather than use the elaborate typography 

 of Stresem\nn, we have recorded the northern birds within Siamese 

 limits as T. c. n ipalensis, while the southern birds are, by Oberholser's 

 designation, typical 2\ c. curvirosfra. For convenience sake we 

 specify as a more exact type locality, Rawang, Selangor — as the 

 Malay Peninsula is 800 miles long and contains two forms of the 

 species. 



In the Journ. Nat. Hist. Soc. Siam, i/, 1920, p. 31, Baker 

 claims that Oberholser cannot select the Malay Peninsula for the 

 typical locality of T. c. curvirostra, as he himself hid already shown, 

 in his " Indian Pigeons and Doves," that the correct type locality was 

 Sumatra. Mr. Baker's claim, however, comes too late : his book was 

 published in 1913, whereas Oberholser had already selected the Malay 

 Peninsula in 1912. We, ourselves, do not consider t1iat anything in 

 Baker's remarks (oj). clt., p. 68) constitutes a fixation of type locality. 



In any event Sumatra has been ruled out in this connection 

 since 1907, as Parrot then described and named the island bird. 

 19. Treron vernans vernans (Linn.). 



Columba vernans, Linn., Mant., 1771, p. 526 (Philippines). 

 Osmotreron viridis, B., p. 78 (Peninsular Siam). 



Osmotreron vernans, C. i, p. 309 (Malay Peninsula) ; D., p. 76 

 (Patani) ; E., p. 122 (Patani) ; F., p. 674 (Malay Peninsula) ; H., 



A. Hume k Davison, Ktmy Keuthcrs, vi, 1878. E. O. Grunt, Fasciculi Malayenses, iii (Birds). 1905. 



B. Milller, Die Ornis dor Insel Salanjfa, 188-2. F. Roliin.son and Kloss, Ibis, 1910-11. 



C. ()at<!s, Hirds llrit. Biirmah, Vols, i & ii, 1883. G. (iairdner, .Journ. N. H. Soc. Siam, i, 1915. 

 O. Honhotc. 1'. Z. H. 1901. Vol. i. H. Itobinson, Journ. F. M. S. Museums, v, 1915. 



JOURN. NAT. HIST. SOC. SIAM. 



