12 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XII. 



the forehead orjinge-red to deep coral-red ; lower mandible black 

 piped, the same as the maxilla. 



Length '* 23*8" to 25-9" ; wing 10-6"to 11-2" ;tail from vent 4-7" to 

 5-8" ; tarsus 1-84" to 1-93" ; bill from gape 2'4" to 2-75" ; weight 2 lbs. 

 4 oz. to 3 lbs. 5 oz. " (Hume). 



Female Adult. — Similar to the male, but smaller and perhaps rather 

 paler in coloration. 



Legs and feet duller red than in the male, as also are the spots on the bill. 



*' AVing alwut 10 inches " (Salvadori). 



" Leng-th 22-0" to 24'0" ; wing 1-9" to 10-7" ; tail from vent 4-9" to 

 5'3" ; tarsus 1-7" to I'O" ; bill from gape 2-3" to 2*5" ; weight 1 lb. 14 oz. 

 to 2 lbs. 12 oz." ( Hume). 



Young resemble the adults, but have no red spots at the base of the bill, 

 and have the feet coloured orange to brick-red. The general plumage is 

 lighter, the spots fewer in number and less in size, the breast being 

 unspotted white. 



There appears to be no i)Ost-nuptial change in the plumage of the 

 drake of this species, and inquiries made on this subject elicit no evidence 

 to show that there is such a change. 



Blanford {in loco cit.) shows that the male has 20 rectrices, whereas the 

 female has but eighteen. This is very remarkable, and it is to be hoped 

 that other observers will note the number of rectrices in both male and 

 female, and so ascertain whether the difference is constant. 



The closely allied A. zonorhjnclia^ which is found from China to 

 Japan, may be recognized by the wing, which has far less white on the 

 inner secondaries and no white sub-tips to the greater coverts ; the specu- 

 kmi also is more blue than green. 



Collectors in N.-E. Burma should be on the look out for this 

 bird. 



The Spotted-billed Duck is found practically throughout the Indian 

 Empire on the mainland, but is absent from Southern Burma. It does 

 not seem to have been recorded from the South Konkan ; but as it occurs 

 in Ceylon, it would naturally be almost sure to ajjpear more or less fre- 

 quently in the South Konkan also. I have a record of this duck from 

 Tennasserim, but I am not sure that the identification was correct, and 

 confirmation of its occurrence there is still requii-ed. Outside India it has 

 been found in the Shan States, and might possibly, not probably, straggle 



