VERTEBRATA FROM MADAGASCAR. 499 



Ambatondrazaka, sixty kilometers northwest of Antsirabe, fifteen 

 miles south of Berevo, June, July, August, and September. 



43. IxoBRYCHUs MiNUTUs PODiciPES (Bonaparte). 

 Two adult males, Morondava, and Miandrivazo, June, and July. 



Anatidae. 



44. Sarcidiornis melanonota (Pennant). 



One adult female, southern end of Lake Alaotra, September 25. 



45. Nettopus auritus (Boddaert). 



Ten adults both sexes, Maevatanana, Tulear, Sahabe River, and 

 southern end of Lake Alaotra, September. 



46. Dendrocygna viduata (Linne.). 



Ten adults, both sexes. Upper Siribihina River, Miandrivazo, 

 June, and July. 



I have compared this series very carefully with both American and 

 African specimens, and can find no real differences. The Mada- 

 gascan birds are much stained on the white parts of the head and neck 

 by bog iron. 



47. Dendrocygna bicolor (Vieillot). 



Six adults, both sexes, Tulear, and southern end of Lake Alaotra, 

 September. 



These examples also I am unable to distinguish from American 

 specimens. The throat is usually darker and more reddish in our 

 Madagascan skins, wholly due, I believe, to staining from bog iron, 

 as the feathers underneath the very tips are of the same color as in 

 specimens from other localities. 



