1877.] DISTRICT OF LAMPONG, S.E. SUMATRA. 487 



Malaccan examples are identical. Among the large series collected by Mr. Buxton are 

 examples in the transition plumage on which Mr. Marshall founded M. humei. 



48. Megal^ma chrysopogon. 



Bucco chrysopogon, Temm. PI. Col. 285, "Sumatra" (1824); Marshall, Mon. Capit. t. 18. 

 Agrees with Malaccan specimens. 



49. MegaluEma veksicolok. 



Bucco versicolor. Raffles, t. c. p. 284, " Sumatra " (1821) ; Marshall, Mon. Capit. t. 22. 

 Bomean and Malaccan individuals belong to the typical species. 



50. Xakthol^ma rosea. 



Bucco roseus, Dumont, Diet. Sc. Nat. iv. p. 52 (1806) ; Marshall, Men. Capit. t. 43. 



The two examples collected by Mr. Buxton are identical with Javan and Negros individuals. 

 Hitherto not recorded from Sumatra. 



51. Xajsthol^ma h^macephala. 



Bucco Immacephalus, L. S. Miiller, Suppl. p. 88 (1776); Marshall, Mon. Capit. t. 42. 

 Bucco pMUppensis, Linn., Raffles, t. c. p. 283, "Sumatra." 



52. Xanthol^ma duvauceli. 



Bucco duvaucelii, Less. Tr. d'Orn. 164, " Sumatra " (1831) ; Marshall, Mon. Capit. t. 33. 

 f. 1, 2. 



Bucco austraUs, Horsf., Raffles, t. c. p. 285, " Sumatra," nee Horsf Ibis, 1877, 



Sumatran, N.E. Bornean, and Malaccan examples exhibit no difference. ^' 



53. Arachnotheea longirostea. 



Certhia longirostra. Lath. Ind. Orn. i. p. 299, " Bengal " (1790). 



Arachiothera affinis, Blyth, J. A. S. B. 1846, p. 43, " Eastern coast, Bay of Bengal, from 

 Arracan to Malacca, Mysore district." 



Arachiothera pusilla, Blyth, Cat. Calc. Mus. App. p. 328. no. 1348 (1849). 



Sumatran examples are identical, both in size and plumage, with Javan. The only difference 

 I am able to detect between Javan individuals and those from Malabar, Assam, and countries 

 south to Malacca, including British Burma, and also those from Borneo, is one of dimensions, 

 these last being smaller and having shorter and perhaps slenderer bills. But I possess Javan 

 examples, in perfect plumage, as small as any from the other localities named — that is, with a 

 difference of three, and even nearly four, eighths in the length of the wing of the largest and 

 smallest Javan species. These differences in size may be characteristic of sex ; but a fully 

 plumaged Bomean male (Busan), sex ascertained by Mr. Everett, has the short wing of my 

 smallest Javan examples. A Tonghoo male, with bright orange pectoral tufts, has a shorter 

 wing and bill than a Javan male in like breeding-plumage. There is not, therefore, sufficient 



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