THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 29 



pp. 88,140 (Bandon, Koh Samui and Koh Petinan) ; J, p. 135 

 (Langkawi Islands) ; L , p. 89 (Ghiifci and ie^lands). 

 Treron vernans vernans, M.l, p. 31 (Tung Song and Patiyu). 



A common bird throughout our region in suitable localities. 



20. Treron bicincta praetermissa Rob. and Kloss. 



Treron hisincta prcetermissa, Robinson &■ Kloss, Journ. Fed. Malay 



States Mus. X, 1921, p. 203 (Koh Lak). 

 Osmotreron hicincta, A., p. 411: 0. ii, 1883, p. 308; B., p. 159 



(Salanga) ; F., p. 674 (Trang) ; G., p. 151 (Ratburi & Petchaburi). 

 Osmotreron hicincta domvillii, Stuart Baker, Indian Pigeons & 



Doves, 1913, p. 49; I., p. 154 (Koh Lak) ; L., p. 89 (Ghh-bi & 



Pulau Patijang). 



6. De Lisle Island, W. Coast Siam. 19 February, 1919. 

 [No. 4121]. 



6 2. Koh Lak, S. W. Siam. 5 April, 1919. [Nos. 5075, 7075]. 



" Iris, outer ring pgile orange, inner ring blue ; bill ivory, 

 greenish at tip ; feet pink." 



Total length 6, 292, 285*; 9, 273*; wing 6, 158,161*; 5, 

 162*; tail 6, 103, 105*; 9, 100*; tarsus c^, 19, 23*; 9, 21*; bill 

 from gape 6, 22, 22* ; 9, 23* mm. 



Diagnosis. Larger than D. h. hisincta from Madras (wing 

 144): differs from D. h. domvillii Swinh. from Hainan in having 

 the grey nuchal patch in the female clear and more extensive, where- 

 as (fide Hartert) it is "indistinct and small" in the island bird. 



Hartert has inadvertently (Nov. Zool. xvii, 1910, p. 192) 

 described the Ceylon bird as being smaller, though his specimans are 

 exactly the same size as the typical birds from Madras. Swinhoe 

 states that his domvillii is smaller than the typical form (presum- 

 ably the bird now described), but this is denied by Hartert. 



E. and S. E. Siam birds appear to be small ; those measured by 

 us have the wing always under 150 mm. 



In addition to the above three specimens, we have examined 

 four males and four' females from various localities from Junk 



* Types. 



I- Gyldenstolpe, Kungl. Sv. Vet. Akad. Handl. M. Baker, Journ. N. H. Soc. Siam, iii, 1919. 



56, No. 2, 1916. (first part). 



J. Eobinson, Journ. F. M. S. Mus. vii, 1917 Baker. Journ N. H. See. Siam, iii, 1919. 



K. Kloss, Ibis, 1918. (second part). 



L. Kobinson and Kloss, Joiu-n. N. H. Soc. Siam, M.l. Baker, Journ. N.H. Soc. Siam, iv, 1920. 



iii, 1919. (third part). 



VOL. V, NO. 1, 1921. 



