584 ANSERINjE. 



secondary coverts with a transverse black band near the end ; 

 the lower parts cream-coloured, with a large chestnut-red 

 patch on the breast. 



GENUS IV. PLECTROPTERUS. SPUR-WINGED GOOSE. 



Bill nearly as long as the head, stout, straight, sub-conical, 

 of nearly equal height and breadth at the base, where there is 

 a protuberance broadly rounded at the end, with the unguis 

 large, very convex, much decurved, and strong-edged; the 

 lamellae of the upper mandible externally thin and concealed ; 

 tarsus stout, moderately compressed, reticulated ; hind toe 

 with a thick narrow lobe ; anterior toes rather long ; claws 

 short, strong, aicuate, obtuse ; wings rather long, broad, with 

 a projecting pointed spur on the tarsal joint ; tail short, 

 rounded. 



1. Plectropterus Gambensis. Gambo Spur-winged Goose. 

 Bill reddish-yellow ; feet orange ; upper part of head and 

 neck brown ; lower part of the neck, sides of the breast, and 

 upper parts, black, glossed with green ; lower parts white. 



