ANATIN^ — THE DUCKS — SOMATErjA. 



77 



Europe," Pt. IV., p. 14), other than those defined nbove. We find the falcate tertials equally- 

 developed in specimens of both forms, while the extent of the green of the head is quite variable, 

 according to the individual. 



The accompanying outline figures will serve to show the great diff"erence in the form of the bill, 

 especially its basal portion, in the two species. 



S. moUissima, S ad. 



S. Bresseri, 6 ad. 



