1918.] recently collected in Siam. 217 



Types. Adult male and female collected at Lat Bua Kao, 

 E. Siam, on 14 and 19 October, 1916. 



Differs from D. c. cruentaium of Bengal and Assam in 

 being much paler below, the under surface in both sexes 

 being white washed with buffy, rather than buffy. From 

 D. c. iynitum (Begbie), of the southern half of the Malay 

 Peninsula, males differ in the same way but to a less degree, 

 the buff colour on the under-parts of Malay birds being less 

 deep than in the ludo-Burmese specimens, but markedly 

 deeper than in the Siamese examples. All have the wing- 

 coverts of the same colour — a glossy steel-blue or greenish 

 steel-l)lue, — except some Malayan birds, in which the sheen 

 is purplish ; this latter feature is relied on by Hartert (Nov. 

 Zool. xviii. p. 244) for distinguishing ignitum, but examples 

 showing it are decidedly in the minority. 



Hartert states that D. c. coccinea (Scop.), of southern 

 China and Hainan, differs from the Indian form in having 

 a larger bill and longer wings, while females have the upper- 

 side more tinged with rusty — so, presumably, the under-parts 

 are as in D. c. cruentaium. The Siamese specimens do not 

 appear to be in any way larger than Indian or Malayan 

 birds, so, apparently, they are not the same as D. c, coccinea. 



In a large series of Malayan birds I find the wings of 

 males to vary from 45 to 49 mm. (lengths of 46 and 47 being 

 commonest), of females between 42 and 46 mm,; two males 

 from the Malay States, Avith wings of 44"5 and 44*3 mm., on 

 the strength of which Gyldenstolpe identified Siamese birds 

 as D. coccinea (Kungl. Sv. Vet.-Akad. Handl. Ivi. No. 2, 

 p. 35), are decidedly minimum-sized specimens. 



Nectariniidje. 

 7~113. Cyrtostomus flammaxillaris (Blyth). 



Gyldenstolpe, Kungl. Sv. Vet.-Akad. Handl. Ivi. No. 2, 

 1916, p. 33. 



1 c? ad., 1 ^S imm., 1 ? . Lat Bua Kao. 



1 (J ad. fachin. Central Siam. Oct. 1916. 



Adult males : T. L. 108, — ; W. 49-5, 49-5. 



Females : T. L. 110 ; W. 48. 



