210 MR. E. C. STUART BAKER ON 
2 Klong Wang Hip, 2. 10. 15. Lat. 8°. Long. 99° about. 
¢ 2 Maprit, P. Siam, 4-10. 1. 16. 
$ Klong Bang Lai, P, Siam, 17. 1, 16, 
These two series of Grackles are most interesting, and confirm 
Oates’ description of the two birds and the differences between them in 
a remarkable degree. ‘he birds obtained North of latitude 12° are all 
intermedia, with wings averaging about 160 mm., and with bills about 
23.5 mm. long and 11.5 mm. deep at the nostrils. 
Those obtained South of lat. 12° are all javanensis, having a 
wing of about 170 mm., with bills about 26 mm. long and 14.5 mm, 
deep. 
In the latter birds the yellow lappets under the eye are all 
completely divided by a narrow line of feathers, whilst in the former 
there is a well-defined space of yellow wattle joining these two areas at 
their lowest edge. 
At the same time we as yet know of no definite boundary line 
between the two forms, and it appears as if they both bred in the 
central area in which the two forms are found together. IR£fthis is so 
they cannot be relegated to the rank of sub-species, as one would have 
expected, and this remains a very interesting conundrum for our 
Siamese Field Naturalists to work out. 
Birds from the Andanians and Nicobars approach most nearly to 
javanensis in their long stout bills, but have the ear lappets as in 
intermedia, thus adding to the diffientty of deciding what status the two 
forms should hold. 
84. STURNIA SINENSIS. 
Orivlus sinensis, Gmel. Sys, Nat. i. p. 394 (1788), 
¢ Krabin, C. Siam, 6. Fay Pe 
2? Bangkok, 14. 3. 16. 
3 5 3 2 Samkok, C. Siam, 18. 3. 16. 
| cannot find that there is any difference in these birds through- 
out their range, beyond the fact that Hainan birds appear to be very 
small. 
A large series of birds from China have an average wing 
measurement of 102 mm, 
JOURN, NAT, HIST, SOC, SIAM, 
