130 



Birds of Burma. 



possess, while others want, the white rictal spot, an unstable character 

 among the continental races, but never found, so far as at present recorded, 

 in true B. macrocerca, nor in B. cathceca. Adult Tonghoo birds agree 

 best in the relative proportions of the rectrices with B. cathceca.'} 



441. B. INTERMEDIA. 



D. intermedins, nobis, J. A. S. B. xv. p. 298 ; xxxix. pt. 2, p. 322 ; Viscount Walden in 

 P. Z. S. 1866, p. 545. 



Arakan hills, near Bassein ( W. T. Blanford), South Tenasserira, Pinang, 

 Malacca (Stolic%ka). 



[Tonghoo, Karen nee, Karen hills ( W. R.) ; Moulmein (Beavan). Lieut. 

 W. Ramsay has sent from the localities cited a very numerous series of a 

 species of Buchanga, which provisionally, until I have been able to examine 

 typical Penang examples, are here referred to B. intermedia (Blyth). They 

 vary but slightly in their dimensions when full grown. Wing, 5-25 ; outer pair 

 of rectrices, 6-12 ; middle pair, 4*25. Nor is there much if any variation in 

 their colouring when in perfect plumage. Lores, jet black; under surface, 

 pure uniform bluish-ash, with little or no gloss ; above, glossy bluish-ash, 

 somewhat darker than below, and paler on the rump ; rectrices, ashy-blue. 

 They are almost identical in colouration with Javan B. leucophcea, that bird 

 however being smaller, and having a less forked tail. Wing of B. leucophcea, 

 5 ; outer pair of rectrices, 5*38 ; middle pair, 4. Among a large number of 

 Javan birds I can find no variation of colouration when in perfect plumage. 

 B. mouhoti, Walden, is not separable from this Burman form.] 



[442. B. PYRRHOPS. 

 Dicrurus pyrrhops, Hodgs., Gray's Zool. Misc. p. 84, no. 553. 



Rangoon, {W. B.). 



The Rangoon examples sent by Lieutenant W. Ramsay are all referable 

 to B. pyrrhops. They are identical with individuals from Deyra Doon, 

 Nipaul, and Dacca. In colouration they do not differ from B. intermedia, 

 but their dimensions are considerably larger. Wing, 5*75; outer pair of 

 rectrices, 6-50; middle pair, 4*50. In perfect plumage they do not vary 

 among one another. Nor can either they or B. intermedia be confounded 

 with fully-plumaged examples of B. longicaudata, either from Malabar, 

 Ceylon, Simla, Mussoorie, Nipaul, Darjeeling, and Asalu. The ashy Drongos 

 have no representative in Southern India or in Ceylon. While B. longicau- 

 data has no representative in Java, so far as is yet recorded, nor have I ever 

 seen a Malaccan or Burman example of it. Along the lower ranges of the 



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