300 Lord Tweeddale on Birds from 
Bucco australis, Horsf., Raffles, t. c. p. 285, “ Sumatra,^ 
nec Horsf. 
Sumatran, Bornean, and N.E. Malaccan examples exhibit 
no difference. 
53. Arachnothera longirostra. 
Certhia longirostra, Lath. Ind. Orn. i. p. 299, “ Bengal ” 
(1790). 
Arachnothera affinis, Blyth, J. A. S. B. 1846, p. 43, “ East¬ 
ern coast, Bay of Bengal, from Arracan to Malacca, Mysore 
district. 
Arachnothera 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 coun¬ 
tries 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 Bornean 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 ground for sepa¬ 
rating specifically any one or more races of this spider-hunter; 
and if there were, the Javan and Sumatran race would require 
the new title, and not the race named affinis (subsequently 
pusilla) by Blyth ; for it supplied Latham with the type of 
his C. longirostra. 
54. Arachnothera flavigastra. 
Anthreptes flavigaster, Eyton, P. Z. S. 1839, p. 105, i( Ma¬ 
lacca.” 
Arachnothera eytonii, Salvadori, t.c. p. 182 (1874). 
