A COLLECTION OF BIRD-SKINS FROM SIAM. 431 
individuals over an equally wide area, though, often, the feathers 
below the eye are injured or lost in the preparation of the skin. 
175. CALORAMPHUS FULIGINOSA HAYI. 
Buceo hayi, J. B. Gray, Zool. Mise. p. 33 (1831). 
¢ Tung Song, P. Siam, 24.9.15. 
176. XANTHOLZMA H#MATOCEPHALA INDICA. 
Bucco indicus, Lath, Ind. Orn. i, p. 205 (1790). India. ° 
¢ 2 2 Sansep, Bangkok, 3-4.7.15. 
2 Klong Wang Hip, P. Siam, 3-6.10.15. 
5 2 Krabin, C. Siam, 80-31.10.15. 
¢ Samray, Bangkok, 6.3.16. 
The type locality for Bucco hematocephalus Muller, is the 
in) 
i) 
Philippines, and this bird has a much bigger bill than that from 
other localities. including Siam, which must bear Latham’s name of 
indicus. Employing Kloss’ excellent method of measuring, 1. é., 
from the point of the nostrils to the tip of the bill, I find that in 
no case does the bill exceed 15 mm., and it varies from 138 to 15 
mm. In the Philippine birds it is never less than 16, and runs up 
to 18 mm. In size the bird itself is much the same as those from 
elsewhere, having a wing of 82 mm. exactly. 
In colour the Philippine bird is generally darker, a more 
bluish green, especially on the primaries. 
177. CoRACIAS AFFINIS. 
Coracias affinis. McClelland, P. Z. S. p. 164 (1839). 
2 Samkok, C. Siam, 21.6.15. 
3 2 Krabin, C. Siam 3-15.11.15. 
The question as to whether Coracias affinis and Coracias 
indicus are races of the same species is very doubtful. That they 
are representative species is of course true, and some naturalists 
would consider this sufficient reason to call them sub-species. As a 
rule, however, geographical races, except island forms, grade into 
one another gradually, where the two forms meet. With these birds 
such is not the case, for at the principal meeting-place, Eastern 
Nepal, Sikkim and Bhutan most specimens are easily referable to 
VOL T11.No. 4, 1919. 
