924 A LIS.) OF THE BIRDS OF PEGU. 
273.—Abrornis superciliaris, Tick, (574.) 
I procured this on the hills between Thyetmyo and Toun- 
ghoo, and I have met with it in Southern Pegu between Pegu 
and Rangoon. It appears to be rare. 
274.—Henicurus immaculatus, Hodgs. (585.) 
Very common in all the rocky hill streams of the Pegu 
range of hills. 
275.—Motacilla leucopsis, Gould. (590.) 
Very abundant in the plains of the whole province from 
the middle of September to April. According to my views 
this species never has more than a mere patch of black on the 
breast, varying in breadth from half to a quarter of an inch. 
Birds just arrived in early autumn, and those leaving in late 
spring, are uniformly the same with regard to this patch. 
Not a particle of black is ever present on the throat. 
276.—Motacilla felix, Swinh. P. Z. S., 1870, p, 121. 
(590). 
This is in my opinion a perfectly good species, always to be 
distinguished from the preceding by the presence of black on 
the upper breast and throat. 
It may be said that Wagtails with this amount of black 
on the throat are merely Jlewcopsis in breeding plumage. I 
am, however, very certain they are no such thing.*  Leucupsis 
* Such a very positive assertion puts me in a peculiar position. I have the greatest 
respect and regard for my friend Mr. Oates. L know what a patient and earnest 
questioner of nature he is, and when I read this statement, I accepted it un- 
hesitatingly. I knew that I had a good many specimens of felix, and I thought 
I would separate these out and have the catalogue corrected. 
There are about 100 specimens of this species in the collection, but I had to 
get out also those in the Assam collection, in the Malayan collection, and in 
the duplicate collection—in all over 400 specimens. I spent the whole day, yester- 
day, in getting these out and studying them, and now I am compelled to say that 
in my humble opinion Mr. Oates is quite wrong, and that felix is nothing but 
the breeding plumage of Jeucopsis. My conviction is founded on the following 
facts :— 
1, From every locality where Mr. Brooks and I made, or caused to be made, syste- 
matic collections of Jeucopsis, viz., Darjeeling, Dinapoor and Patna, Calcutta, 
Cachar, Shillong, Debrugarh, Rangoon, and Northern Tenasserim, we have both 
Zeucopsis and felix, 
2. Out of this immense series, there is only one single specimen killed between 
the 1st September and the 15th February, at all of the felia type, and that is only 
so far of this type that the patch on the breast is about ~ of an inch deep, 
3. Every single bird killed on and subsequent to the 18th March is distinctly 
felix, or passing to felix. ; 
4, Fully half the birds killed between the 1st and 17th March show distinctly 
that they are passing to the felzw stage. 
5. A few specimens obtained in the latter half of February show more or less 
of the same, and one killed 25th February is distinctly felix. 
Now Mr. Oates refers to April birds. In every locality in which our collections 
were made the mass of the birds disappeared by the end of March. They come in 
quite at the beginning of September, we have at least fifty September specimens, 
