472 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



MOTACILLA CINEREA CASPICA (Gmclin) 



Pariis caspicus Gmelin, Reise durch verschiedeno Provinzen dcs russischen 

 Reichs, vol. 3, p. 104, pi. 20, fig. 2, 1774 (Enzeli, Caspian Sea). 



One male, Chiengmai, November 25, 1928; one female, Nan, April 

 14, 1930; one female, Wang Kien, March 13, 1934; one male and one 

 female, Sikeu, near Korat, February 7, 15, 1926; one female, Nong 

 Mong, Aluang Krabin, August 24, 1925; one male, Nong Khor, near 

 Sriracha, September 27, 1925; one male, Koh Chang, January 16, 

 1926; one female, Pran, April 2, 1931. 



Dr. W. L. Abbott collected three males and two females in Trang 

 (Lay Song Hong, September 19 and October 4, 9, 1896; near base of 

 Kao Nom Plu, March 8, 9, 1897) ; and three males, Mergui Archipelago^ 

 1900 (Domel Island, February 25; Bentinck Island, March 11; 

 Hastings Island, December 12). 



All except two of the above series are either in winter or immature 

 plumage. 



The form breeds from the Ural Alountains east to Kamchatka and 

 south to the Himalayas, It winters in India, Burma, Assam, Siam, 

 Indo-China, the Malay Peninsula, Java, Borneo, the Philippmes^ 

 Celebes, and as far south as New Guinea. 



In Siam it is a common winter visitant all over the country and south 

 in Peninsular Siam to the Malay States. 



Deignan ^^ reports it common at Cliiengmai from August to Anril. 

 I have not seen any dates for arrival and departure from the south. 



BUDYTES FLAVUS SIMILLIMUS (Hartert) 



Motacilla flava simillima Hartert, Die Vogel der palaarktischen Fauna, vol. 1, 

 Heft 3, p. 289, 1905; Nov. Zool., vol. 26, p. 167, 1919 (Sula Island). 



Four males, Bangkok, October 25, 28, 1926; April 11, 15, 1934; 

 one unsexed, Hin Lap, September 29, 1932; two males and one female, 

 Koh Tao, off Bandon, September 22, 26, 1928. 



All this series, except the two spring males from Bangkok, are in 

 immature plumage with white underparts. 



The following were received from Dr. W. L. Abbott: Three imma- 

 ture males, Tanjong Kalong, Singapore, October 22, 1899; one female, 

 80 miles west of Penang, October 9, 1902. 



Nearly all this series are in young pkimage with white underparts. 

 I am doubtful whether they all really belong to this form. There is 

 no way of absolutely being able to tell the young of B. J. simillimus 

 and B. t. plexus apart. Both color and measurements break down 

 upon examination. As a rule the j'^oung of plexus form has a more 

 narrow and interrupted superciliary, but a topotypical immature in 

 the United States National Museum has this feature, almost if not 



<> Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 153, 1931. 



